The theoretical problem with assignment is that it covers two branches of law and does not fit easily into both. This has led to conceptual confusion in the interpretation of assignment agreements. If a clergyman is appointed bishop, or if a pastor or rector accepts another sinecure without dispensation, the first sinecure becomes invalid by a legal assignment or capitulation. In practice, it is important to distinguish between the parties, since a contract of assignment is usually concluded on the basis of an obligation between the assignor and the assignee. (i.e. the assignor is usually a debtor of the assignor) Do not confuse the duties of the assignor with the duties of the principal debtor. In practice, the process of a mission can be summarized as follows: A mission is the transfer of a personal right from one person to another. .