Summarize the following court judgment. Appeal No. 1518 of 1980. From the Judgment and Order dated 21.8.1979 of the Allahabad High Court in Civil Misc. Writ No. 9724 of 1978. J.D. Jain	 A. Subba Rao	 C.V.S. Rao and Ms. A. Subha shini for the Appellants. S.S. Khanduja	 V.J. Francis and N.M. Popli for the Respondents. The Judgment of the Court was delivered by YOGESHWAR DAYAL	 J. This appeal by special leave is directed against the judgment of the Division Bench of the High Court of Allahabad dated 21st August	 1979 whereby the High Court allowed the writ petition filed by the four petitioners therein and issued a writ of mandamus directing respondents 1	 2 and 3 (Comptroller & Auditor General of India	 New Delhi	 The Accountant General	 I	 U.P. Allahabad and the Union of In&a) not to enforce the circular dated 25th January	 1973 as a rule regarding reservation of Sched uled Caste and Scheduled Tribes in relation to filling up of posts by promotion on the basis of seniority subject to fitness. The aforesaid respondents were further restrained from promoting respondents 4	 5 and 6 in the writ petition to the post of Accounts Officers on the basis of the im pugned circular dated 25th January	 1973. We would continue to refer to the parties as per the cause title of the writ petition in the High Court. The writ petition came to be filed by the petitioners	 M.L. Mehrotra and three others. The petitioners said to be working as Section Officers in the office of the Accountant General I	 II and III	 Allahabad and they prayed for re straining respondents 1	 2 and 3 from promoting Yamuna Prasad Kureel	 respondent No. 4	 Ram Raj Ram	 respondent No. 5 and Ram Dihal	 respondent No. 6	 in the writ petition	 who were working as 485 Section Officers and belonged to the Scheduled Caste	 to the post of Accounts Officer. The case of the writ petitioners was that they were senior to respondents 4	 5 and 6 and they cannot be promoted to the post of Accounts Officers through seniority quota before the writ petitioners. Their case was that the promo tion to the post of Accounts Officers is regulated by the rules made by the President in exercise of the powers con ferred by proviso to Article 309 and clause (5) of Article 148 of the Constitution after consultations with the Comp troller and Auditor General of India. These rules are known as "Indian Audit & Accounts Department (Administrative Officers	 Assistant Accounts Officers and Assistant Audit Officers) Recruitment Rules	 1963" (hereinafter referred to as the Rules). In the counter affidavit filed it was pleaded that the Assistant Accounts Officers and Assistant Audit Officers are now called Accounts Officers and Audit Offi cers. The aforesaid rules lay down the method of recruitment to the post of Administrative Officers	 Assistant Accounts Officers and Assistant Audit Officers in the Indian Audit and Accounts Department. The method of recruitment laid down in these rules in respect of these posts is by promotion. They do not contain any specific provisions for reservation for Scheduled Caste and Scheduled Tribes. The appellants herein relied upon the administrative instructions contained in the circular letter dated 25th January	 1973 issued by the Comptroller and Auditor General of India for the purpose of reservation for Scheduled Castes and Scheduled Tribes for these promotion posts. The writ petitioners challenged the validity of these administrative instructions contained in the circular dated 25th January	 1973. It was further pleaded that the lowest post in the Office of the Accountant General U.P. 1	 I1 and II1 is of group 'D ' employees who are selected directly on the basis of merit. There is a quota fixed for Scheduled Castes and Scheduled Tribes. Then there are posts of clerks	 a fixed quota percentage of which is filled in directly through examination and quota is fixed for Scheduled Castes and Scheduled Tribes. The remaining posts of clerks are filled in by selection from class 'D ' employees by promotion on the basis of seniority. The next higher posts are the post of Auditors. A fixed percentage whereof is filled in directly through examination and a quota is fixed for Scheduled Castes and Scheduled Tribes. The remaining posts of Auditors are filled in by promotion from clerks on the basis of seniority. The next higher post is of Section Officers in which the writ petitioners and respondents to the writ petition were working. These posts are filled in from the cadre of Auditors and clerks. The Auditors as well as 486 clerks have to pass examination known as Subordinate Ac counts Service. Normally more candidates pass this examina tion then the number of posts available for the Section Officers. Here also there is a quota fixed for Scheduled Castes and Scheduled Tribes candidates. The post of Accounts Officers (i.e. the posts in question) are filled in by promotion from Section Officers. 50 per cent of the vacancies are filled on the basis of merit (called the merit quota) and the remaining 50 per cent are required to be filled in on the basis of seniority (called seniority quota). Normally the number of candidates avail able in the merit quota are less than 50 per cent of the posts available; hence the number of posts available in seniority quota is usually more than 50 per cent. It was pleaded in the counter affidavit that the promotion will continue to be made in accordance the existing rules and orders on the subject namely those referred to above includ ing the circular dated 25th January	 1973	 validity of which had been challenged. The High Court took the view (1) that there is no reser vation for Scheduled Castes and Scheduled Tribes made under the rules; (2) that the administrative instructions con tained in the circular No.172 NGE ll/56 72 1 dated 25th January	 1973 issued from the office of Comptroller and Auditor General of India	 New Delhi	 inter alia	 to all the Accountants General and the offices subordinate to them	 on its own did not make a provision for the proposed reserva tion in pursuance to the policy decision. (3) It also took the view that the statutory rules were not silent on the subject of promotion to the post of Assistant Accounts Officer (now called Accounts Officers). This being so	 it was not open to the Government to supplement the statutory rules to fill up the gaps. This could be done by only amend ing the statutory rules in compliance with the provisions of Article 148(5) of the Constitution. The High Court drew support from a Division Bench of the Madras High Court in Accountant General	 Tamil Nadu & Others vs Doraswami & Oth ers	 1974 Labour Industrial Cases 384 and the decision of the Orissa High Court in the Original Jurisdiction cases No. 357 and 359 of 1977	 P. Parbhakar Rao vs Union of India decided on 31st of July	 1978. The High Court took the view that the administrative Instructions contained in the circu lar letter dated 25th January	 1973 cannot help respondents and no reservations for Scheduled Castes and not Scheduled Tribes can be made on that basis. The High Court accordingly allowed the writ petition as stated earlier. Before the High Court the counsel for the writ petition ers also submitted that the administrative instructions contained in the circular dated 487 25th January	 1973 could not be said to be the rules made by the President after consultations with the Comptroller and Auditor General of India as contemplated by Article 148(5) of the Constitution and referred to the language of the circular letter dated 25th January	 1973. A supplementary counter affidavit of Shri P.P. Dhir	 Accountant General l had also been filed where it was stated that the language used in the circular in substance	 are the orders of the President. The High Court took the view that no other mate rial has been referred to in the counter affidavit filed	 which will show that the instructions contained in the circular dated 25th January	 1973 were based on the decision of the President of India. However	 the High Court held that they considered it unnecessary to go into this question any further since they had already held that the administrative instructions contained in the circular were of no avail to the respondents in the writ petition as they could not alter the statutory rules in force. It appears the Department of Personnel issued a memoran dum No. 27/2/71.Estt. (SCT) dated 27th November	 1972 to all Ministries. The subject of this memorandum was reservation for Scheduled Castes and Scheduled Tribes in posts filled by promotion on the basis of seniority subject to fitness. This memorandum noted in paragraph 2 thereof that the policy in regard to reservation for Scheduled Castes and ScheduLed Tribes officers in posts to be filled by promotion on the basis of seniority subject to fitness now has been reviewed and it has been decided	 in supersession of the orders contained in the aforesaid para 2 C of the O.M. dated 11th July	 1968 that there will be reservation at 15 percent for Scheduled Castes and 7 1/2 per cent for Scheduled Tribes in promotions made on the basis of seniority subject to fit ness	 in grades or services in which the element of direct recruitment	 if any	 does not exceed 50 per cent and gave detailed procedure how promotions have to be made on the basis of seniority subject to fitness in the light of the aforesaid reservations. It was stated in the memorandum that the Ministry of Finance etc. arc requested kindly to bring the above decisions to the notice of all attached and subor dinate offices under them and semi Government and autonomous bodies. This memorandum also stated in paragraph 6 thereof as under: "In so far as officers serving under Indian Audit & Accounts Department are concerned	 separate orders will issue in due course. " Thereafter	 Shri section Krishnan	 Deputy Secretary	 De partment of Personnel	 Cabinet Secretariat	 New Delhi wrote a D.C. No. 27/2/71 Estt 488 (SCT) dated 1st January	 1973 to Shri R. Hariharan	 Assist ant Comptroller & Auditor General (N)	 Office of the Comp troller and Auditor General of India	 New Delhi. In this letter the Deputy Secretary of the Department of Personnel wrote as under "Dear Shri Hariharan	 Please refer to your D.O. letter No.2859/NGEII/56 72 dated the 24th November	 1972 regarding reservations for Scheduled Castes and Scheduled Tribes in posts filled by promotion on the basis of seniority subject to fitness. A copy of the orders issued in this Department 's O.M. No.27/2/71 Est(SCT) dated 27.11.1972 has already been endorsed to the C. & A.G. A copy of the said O.M. is enclosed for ready reference. We shall be grateful to know whether separate instructions which are pro posed to be issued by C. & A.G. in this regard in respect of persons serving under the Indian Audit & Accounts Department have since been finalised. The draft of the instructions may please be shown to us	 if since finalised. I need hardly emphasise that it is desirable to expedite issue of such orders. Yours sincerely	 sd/ (section Krishnan)" Thereafter	 the Assistant Comptroller & Auditor General (P) also met the said Deputy Secretary of the Department of Personnel and also sent a draft of instructions proposed to be issued to the offices under the Comptroller and Auditor General of India to Deputy Secretary	 Department of Person nel vide a D.O.letter No.20 NGE II/56 72 I dated 5th Janu ary	 1973 by Shri R. Hariharan	 Assistant Comptroller and Auditor General	 Office of Comptroller and Auditor General of India	 New Delhi. Alongwith this letter a draft of in structions proposed to be issued to the offices under the Comptroller and Auditor General was forwarded. The Deputy Secretary	 Department of Personnel	 Shri section Krishnan vide their communication dated 22nd January	 1973 informed Shri R. Hariharan	 aforesaid	 that the draft of instructions proposed to be issued were in order and it was requested that a copy of the instructions when issued may be 489 sent to their department. It was in pursuance of these consultations that the impugned circular dated 25th January	 1973 was issued from the office of the Comptroller and Auditor General of India	 New Delhi. For facility of under standing the relevant part of the circular dated 25th Janu ary	 1973 issued from the office of the Comptroller and Auditor General of India	 New Delhi is reproduced hereunder: No.172 NGE II/56 72 I OFFICE OF THE COMPTROLLER & AUDITOR GENERAL OF INDIA	 NEW DELHI 1. Dated the 25 1 1973. To All Accountants General and Offices subordi nate to them. All Chief Auditors of Rlys. and offices subor dinate to them. All Regional Directors of Commercial Audit	 Chief Auditors of Commercial Accounts and offices subordinate to them. The Directors	 I.A. & A.S. Staff College	 Simla. The Director of Audit	 Defence Services and offices subordinate to him. The Assistant Comptroller and Auditor General (P). (For G.E.I	 G.E.II	 &OE & A.Sections) Subject: Reservation for Scheduled Castes and Scheduled Tribes in posts filled by promotion promotions on the basis of sen iority subject to fitness. Sir	 I am to invite a reference to para 3(c) of this office circular letter No. 1989 NGE.II/89 68	 dated 3.10.1968 according to which there is no reservation for Scheduled Castes & 490 Scheduled Tribes in appointments made by promotion on the basis of seniority subject to fitness although cases involving supersession of Scheduled Castes and Scheduled Tribe Officers in Class II appointments are required to be submitted for prior approval of the Comptroller and Auditor General of India and the cases involving supersession of Scheduled Caste and Scheduled Tribe officers in Class III & Class IV appointments have to be report ed within a month to the Comptroller and Auditor General of India for information. The policy in regard to reserva tions of Scheduled Caste and Scheduled Tribe officers in posts filled by promotion on the basis of seniority subject to fitness has now been reviewed by the Government of India in consultation with the Comptroller and Auditor General of India and it has been decided	 in supersession of the orders contained in the aforesaid para 3(c) of our circular letter dated 3.10.1968 that there will be reservation at 15% for Scheduled Caste and 71% for Sched uled Tribes in promotions made on the basis of seniority subject to fitness in appointments to all Class I	 Class II	 Class III and Class IV posts in grades	 of services in which the element of direct recruitment	 if any does not exceed 50%. The above orders will necessitate reservation for Scheduled Castes and Scheduled Tribes in promotions made on the basis of seniority subject to fitness to the following grades in the I.A. & A.D. Promotions from Class III to Class II The existing procedure of promotions to A.Os. grade will not undergo any change	 as far as the posts filled by selection is con cerned. Reservation to the extent of 15% for Scheduled Castes and 7 1/4% for Scheduled Tribes will	 however	 have to be made with reference to the number of posts of Accounts Officers filled in a year on the basis of seniority subject to fitness and for this purpose	 a roster maintained in respect of such promotions. 491 4. The following procedure may be followed to give effect to the decision men tioned in paragraph 2 above. The above instructions take effect from 27.11.1972 except where a Select List	 if any	 for promotion by seniority subject to fitness has ' already been prepared by a De partmental Promotion Committee and approved by the appropriate authority before issue of these orders (i.e. 27.11.1972). The receipt of this circular letter may kindly be acknowledged. Yours faithfully	 Sd/ (R. Hariharan) Asstt. Comptr. Genl.(N) The High Court is not right in stating that there cannot be an administrative order directing reservation for Sched uled Castes and Scheduled Tribes as it would alter the statutory rules in force. The rules do not provide for any reservation. In fact	 it is silent on the subject of reser vation. The Government could direct the reservation by executive orders. The administrative orders cannot be issued in contravention of the statutory rules but it could be issued to supplement the statutory rules. (See: the observa tions in Santram Sharma vs State of Rajasthan and Anr.	 ; In fact similar circulars were issued by the Railway Board introducing reservations for Scheduled Castes and Scheduled Tribes in the Railway services both for selection and non selection categories of posts. They were issued to implement the policy of the Central Government and they have been upheld by this Court in Akhil Bhartiya Soshit Karamchari Sangh (Railways) vs Union of India & ors. ; The High Court has also touched upon the validity of the impugned circular and stated that they were not issued by the President after consultation with the Comptroller & Auditor General. In the present case	 the President has not issued the circular	 but Comptroller and Auditor General has issued it. There was however	 proper consultation between the Government and the Comptroller & Auditor General for issuing the circular. The infirmity pointed out that it was not issued in the name of the 492 President	 therefore	 relates only about the form and not with regard to the substance. The circular of course	 ought to have been issued in the name of the President as required under Article 148(5) of the Constitution	 as it affects the service conditions of persons in the Audit and Accounts Department. But since the Government has approved the circu lar and the circular was in accordance with the declared policy of reservation	 we do not want to restrain the Comp troller & Auditor General from enforcing it. We are thus of the view that the impugned circular is valid and binding. The circular by its own provides for reservation. The authorities concerned must take that into account while affecting promotions under the rules. The result is that the impugned judgment of the High Court is set aside and the appeal is allowed. In the circumstances of the case	 however	 we make no order as to costs. N.P.V. Appeal allowed.

The respondents	 Section Officers in the offices of the Accountant General I	 II and III	 Allahabad	 filed a writ petition before the High Court challenging the validity of administrative instructions contained in Circular No. 172 NGE 11/56 72 I dated 25th January	 1973 issued by the first appellant	 regarding the reservations for Scheduled Castes and Scheduled Tribes in relation to filling up of posts by promotion on the basis of seniority subject to fitness	 and praying that the first appellant and two others be re strained from promoting three of the Section Officers	 belonging to the Scheduled Castes to the post of Accounts Officer	 contending that since the respondents were senior	 those three Section Officers could not be promoted to the post of Accounts Officers through seniority quota before the respondents. It was also contended that the promotion to the post of Accounts Officers was regulated by Indian Audit & Accounts Department (Administrative Officers	 Assistant Accounts Officers and Assistant Audit Officers) Recruitment Rules 1963 made by the President in exercise of the powers conferred by proviso to Article 309 and clause (5) of Arti cle 148 of the Constitution after consultations with the Comptroller and Auditor General of India	 which laid down that recruitment to the post of Administrative Officers	 Assistant Accounts Officers and Assistant Audit Officers in the Indian Audit and Accounts Department was by promotion	 that the rules did not contain any specific provisions for reservation for Scheduled Castes and Scheduled Tribes and hat the administrative instructions contained in the circu lar could not be said to be rules made by the President after consultation with the first 483 appellant as contemplated by Article 148(5) of the Constitu tion. Allowing the writ petition	 the High Court held that there was no reservation for scheduled castes and scheduled tribes made under the rules	 that the administrative in structions contained in the circular in question did not make provision for the proposed reservation in pursuance to the policy decision and that the statutory rules were not silent on the subject of promotion to the post of Assistant Accounts Officers	 subsequently designated as Accounts Officers and	 therefore	 it was not open to the Government to supplement the statutory rules to fill up the gaps	 which could be done by only amending the statutory rules in com pliance with the provisions of Article 148(5) of the Consti tution. Hence the appeal by the Department. Allowing the appeal	 this Court	 HELD: 1.1 The High Court is not right in stating that there cannot be an administrative order directing reserva tion for Scheduled Castes and Scheduled Tribes as It would alter the statutory rules in force. The rules do not provide for any reservation. In fact	 they are silent on the subject of reservation. The Government could direct the reservation by executive orders. No doubt	 administrative orders cannot be Issued In contravention of the statutory rules	 but they could be issued to supplement the statutory rules. In fact	 similar circulars were issued by the Railway Board introduc ing reservations for Scheduled Castes and Scheduled Tribes In the Railway Services both for selection and non selection categories of posts. They were issued to Implement the policy of the Central Government. [491 D F] Santram Shams vs State of Rajasthan and Anr.	 ; and Akhil Bhartiya Soshit Karamchari Sangh (Rail ways) vs Union of India & Ors.	 ; 	 referred to. 1.2 It is true that the President has not issued the circular in question but the first appellant has issued it. There was	 however	 proper consultation between the Govern ment and the first appellant for issuing the circular. The infirmity pointed out that it was not issued in the name of the President	 therefore	 relates only to the form and not with regard to the substance. The circular	 of course	 ought to have been issued in the name of the President as required under. Article 148(5) of the Constitution	 as it 484 affects the service conditions of persons in the Audit and Accounts Department. But since the Government has approved the circular and the circular was in accordance with the declared policy of reservation	 the first appellant cannot be restrained from enforcing it. [491 G H	 492 A B] The circular in question is valid and binding. The circular by itself provides for reservation. The authorities concerned must take that into account while effecting promo tions under the rules. [492 B]