How To Fix FP155 - Not possible to change document no. or fiscal year of interest document

FP155 - Overview

• Message type: E = Error

• Message class: FP - Invoice Parking

• Message number: 155

• Message text: Not possible to change document no. or fiscal year of interest document

What causes this issue?

You are trying to change the fiscal year or the document number of an
interest document.

System Response

This is not possible because such changes would require complicated
changes to be made to interest calculation data and to other changes in
the interest document.

How to fix this error?

Reverse the interest document using transaction FINTSHOW and recalculate
the interest.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

FP155 - Details

• The SAP error message FP155, which states "Not possible to change document no. or fiscal year of interest document," typically occurs in the context of financial document processing, particularly when dealing with interest documents in the SAP system. This error indicates that there is an attempt to change the document number or fiscal year of a document that is not allowed due to certain constraints.
  Causes:
  
  Document Status: The document may be in a status that does not allow changes. For example, if the document has already been posted or cleared, it cannot be modified.
  Fiscal Year Restrictions: The fiscal year for the document may be closed, preventing any changes to documents from that period.
  Document Type Restrictions: Certain document types may have restrictions on changing key fields like document number or fiscal year.
  Authorization Issues: The user may not have the necessary authorizations to make changes to the document.
  
  Solutions:
  
  Check Document Status: Verify the status