system: You are a contract-analysis assistant performing a span-extraction task. You are given an excerpt from a commercial contract and the name of a clause type to locate within it.

Return the exact text of the requested clause, copied verbatim from the excerpt — identical wording and punctuation, with no paraphrasing, summarising, explanation, or added commentary.

The excerpt is one window of a much longer contract and often will not contain the requested clause. If the requested clause does not appear in this excerpt, respond with exactly: Not found.

Output only the extracted clause text, or the exact string `Not found.` — nothing else.

user: Contract excerpt:
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Subcontractor records, including financial records relating to the invoices and payment obligations and supporting documentation, pertaining to the Services. The scope of AT&T Audits shall also include: (i) practices and procedures used in performing the Services; (ii) systems, communications and information technology used in performing the Services; (iii) general controls and security practices and procedures; (iv) supporting information and calculations regarding invoices and compliance with service requirements; (v) quality initiatives and quality assurance; and (vi) compliance with the terms of this Agreement. AT&T's access to the records and other supporting documentation shall include the right to inspect and photocopy Vendor's documentation and the documentation of its Subcontractors as provided to Vendor, and the right to retain copies thereof outside of their physical location with appropriate safeguards, if such retention is deemed reasonably necessary by AT&T and only to the extent that all such records are maintained by AT&T in accordance with Section 3.16 hereof. (c) AT&T Audits may be conducted once a year (or more frequently if requested by governmental authorities who regulate AT&T's business, if required by applicable Law or if auditors require follow-up access to complete audit inquiries or if an audit uncovers any problems or deficiencies), upon at least ten (10) business days advance notice (unless otherwise mandated by Law) and during business hours. Vendor will cooperate, and will ensure that its Subcontractors cooperate, in the AT&T Audits, and will make the information reasonably required to conduct the AT&T Audits available on a timely basis. (d) If, as a result of an AT&T Audit, AT&T determines that Vendor has not performed or has unsatisfactorily performed any obligation under this Agreement, then Vendor will promptly remedy the non-performance or unsatisfactory performance. Proprietary and Confidential This Agreement and information contained therein is not for use or disclosure outside of AT&T, its Affiliates, and third party representatives, and Vendor except under written agreement by the contracting parties. 35 Source: ATN INTERNATIONAL, INC., 10-Q, 11/8/2019 (e) Vendor will maintain and retain the records set forth in Subsection (a) during the term of the Agreement and for three (3) years thereafter (unless a discovery or legal hold request is made with respect to such records, in which case Vendor shall retain such records until AT&T notifies Vendor that such discovery or legal hold request has expired). Vendor will provide AT&T, at AT&T's request and cost, with paper and electronic copies of documents and information reasonably necessary to verify Vendor's compliance with this Agreement. Upon notification by AT&T of a discovery or legal hold request, Vendor shall fully cooperate with such request and immediately preserve any Vendor records covered by such request and promptly provide such Vendor records requested by AT&T related to the inquiry. (f) Except as provided in Subsection (d), all reasonable out-of-pocket costs and expenses incurred by AT&T in connection with an AT&T Audit shall be paid by AT&T. Vendor shall be solely responsible for all costs and expenses incurred by Vendor in connection with its obligations under this Section. In the event that either Party requires that an audit be performed by an independent auditor, unless otherwise specified herein, the Party requesting such independent auditor will be responsible for the costs and expenses associated with the independent auditor. (g) With respect to AT&T requests for audits or inspections of Vendor's Subcontractors, the following applies: (i) If Vendor's agreement with its applicable Subcontractor permits an AT&T Audit, AT&T shall be permitted to conduct such audit directly or through a third party representative. Vendor shall work with AT&T in facilitating the Subcontractor's cooperation for an expeditious and thorough audit or inspection. (ii) If Vendor's contract with its applicable Subcontractor precludes AT&T from directly conducting an audit or inspection, Vendor shall use reasonable best efforts to enable AT&T to perform an audit of the Subcontractor with Vendor coordinating the audit process. Failing those efforts, Vendor shall, upon AT&T's request and at AT&T's expense, conduct the audit or inspection on behalf of AT&T, subject to terms agreed to by Vendor and AT&T for the Subcontractor audit, such as areas to be audited, applicable fees, and the timeframe for reporting audit results to AT&T. If AT&T's request for a Vendor audit or inspection arises from, in AT&T's good faith opinion, materially or consistently deficient Service provided by the Subcontractor under AT&T's account, and the audit in both Parties' opinions confirms such deficiencies, Vendor shall not charge AT&T a fee for the Vendor's audit of its Subcontractor. (iii) If Vendor's contract with its applicable Subcontractor
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Extract the exact clause related to "Post-Termination Services" from the excerpt above.

assistant: Vendor will maintain and retain the records set forth in Subsection (a) during the term of the Agreement and for three (3) years thereafter (unless a discovery or legal hold request is made with respect to such records, in which case Vendor shall retain such records until AT&T notifies Vendor that such discovery or legal hold request has expired)