Source: https://canonlaw.ninja/?nums=265-272
Timestamp: 2019-04-23 23:06:58+00:00

Document:
Canon 265. Every cleric must be incardinated either in a particular church or personal prelature, or in an institute of consecrated life or society endowed with this faculty, in such a way that unattached or transient clerics are not allowed at all.
Canon 266. §1. Through the reception of the diaconate, a person becomes a cleric and is incardinated in the particular church or personal prelature for whose service he has been advanced.
Canon 267. §1. For a cleric already incardinated to be incardinated validly in another particular church, he must obtain from the diocesan bishop a letter of excardination signed by the same bishop and a letter of incardination from the diocesan bishop of the particular church in which he desires to be incardinated signed by that bishop.
§2. Excardination thus granted does not take effect unless incardination in another particular church has been obtained.
Canon 268. §1. A cleric who has legitimately moved from his own particular church to another is incardinated in the latter particular church by the law itself after five years if he has made such a desire known in writing both to the diocesan bishop of the host church and to his own diocesan bishop and neither of them has expressed opposition in writing to him within four months of receiving the letter.
§2. Through perpetual or definitive admission into an institute of consecrated life or into a society of apostolic life, a cleric who is incardinated in the same institute or society according to the norm of can. 266, §2 is excardinated from his own particular church.
3. the cleric has declared in writing to the same diocesan bishop that he wishes to be dedicated to the service of the new particular church according to the norm of law.
Canon 270. Excardination can be licitly granted only for just causes such as the advantage of the Church or the good of the cleric himself. It cannot be denied, however, except for evident, grave causes. A cleric who thinks he has been wronged and has found an accepting bishop, however, is permitted to make recourse against the decision.
Canon 271. §1. Apart from the case of true necessity of his own particular church, a diocesan bishop is not to deny permission to clerics, whom he knows are prepared and considers suitable and who request it, to move to regions laboring under a grave lack of clergy where they will exercise the sacred ministry. He is also to make provision that the rights and duties of these clerics are determined through a written agreement with the diocesan bishop of the place they request.
§2. A diocesan bishop can grant permission for his clerics to move to another particular church for a predetermined time, which can even be renewed several times. Nevertheless, this is to be done so that these clerics remain incardinated in their own particular church and, when they return to it, possess all the rights which they would have had if they had been dedicated to the sacred ministry there.
§3. For a just cause the diocesan bishop can recall a cleric who has moved legitimately to another particular church while remaining incardinated in his own church provided that the agreements entered into with the other bishop and natural equity are observed; the diocesan bishop of the other particular church, after having observed these same conditions and for a just cause, likewise can deny the same cleric permission for further residence in his territory.
Canon 272. A diocesan administrator cannot grant excardination or incardination or even permission to move to another particular church unless the episcopal see has been vacant for a year and he has the consent of the college of consultors.

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