Message type: E = Error
Message class:  67_LOAN - Messages for Fin. Asset Management for Loans - Continued 
Message number: 255
Message text: You are not allowed to change that document (result from BAdI check)
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The SAP error message 67_LOAN255 indicates that you are not allowed to change a specific document due to a check performed by a Business Add-In (BAdI). This typically occurs in the context of financial transactions, such as loan management or other financial documents, where certain conditions or rules are enforced to maintain data integrity and compliance.
Cause: BAdI Implementation: The error is triggered by a BAdI implementation that has been configured to restrict changes to certain documents based on specific criteria (e.g., document status, user roles, or other business rules). Document Status: The document you are trying to change may be in a status that does not allow modifications (e.g., completed, posted, or locked). Authorization Issues: The user may not have the necessary authorizations to make changes to the document. Business Rules: There may be business rules defined in the system that prevent changes to certain types of documents after they have been processed.
Solution: Check Document
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