Message type: E = Error
Message class:  FICUSTOM - Customizable Messages for Funds Management 
Message number: 108
Message text: Posting not possible: Clrg of transfer cannot be reversed w/o cancelation
You want to reset a clearing for a transfer document and have chosen
<LS>Reset Only</>.
However, this is not possible because it causes performance problems and
errors with the <LS>Payment Selection</> program when documents are
interpreted and transferred to Funds Management.
You must, therefore, reverse transfer documents when resetting
clearings.
The system does not reset the clearing.
Choose <LS>Reset and Reverse</> with the clearing reset for transfer
documents.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message FICUSTOM108 indicates that a posting cannot be processed because the clearing of a transfer cannot be reversed without a cancellation. This error typically occurs in the context of financial transactions, particularly when dealing with clearing accounts or intercompany transactions.
Cause: Clearing Document Exists: The error usually arises when there is an existing clearing document that has already been posted. The system does not allow reversing a transfer that has been cleared without first canceling the original clearing document. Incorrect Transaction Type: The transaction type being used may not support reversal without cancellation. Posting Period Issues: The posting period may be closed, preventing any changes to the transactions.
Configuration Issues: There may be configuration settings in the financial module that restrict certain types of reversals.
Solution: Cancel the Clearing Document: Navigate to the clearing document in question and cancel it. This can typically be done through transaction codes like F-03 (Clear G/L Account) or
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