Message type: E = Error
Message class:  67_LOAN - Messages for Fin. Asset Management for Loans - Continued 
Message number: 755
Message text: Contract currency cannot be changed as posting exists.
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The SAP error message 67_LOAN755 indicates that you are trying to change the currency of a loan contract, but the system has detected that there are already postings associated with that contract. This is a common restriction in financial systems to maintain data integrity and ensure that all transactions are accurately recorded in the correct currency.
Cause: Existing Postings: The primary reason for this error is that there are financial transactions (postings) already recorded against the loan contract in question. Changing the currency would affect these postings and could lead to inconsistencies in financial reporting. Contract Status: The contract may be in a status that does not allow changes, such as "active" or "posted." Configuration Settings: There may be specific configuration settings in your SAP system that restrict changes to certain fields once postings have been made.
Solution: Check for Postings: Review the loan contract to identify any existing postings. You can do this by navigating
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