Message type: E = Error
Message class:  FI - TR-FM Funds Management 
Message number: 637
Message text: Company code &: assigned number range interval does not exist
Number range interval &V3& for FM area &V2&, which is assigned to
company code &V1&, does not exist.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Go to the Funds Management implementation guide.  Enter a number range
interval for FM line items and assign it to the FM area.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message FI637 indicates that there is an issue with the number range assignment for a specific company code. This error typically occurs when the system is trying to create a financial document (like an invoice or a journal entry) and cannot find a valid number range interval assigned to the specified company code.
Cause: Missing Number Range Interval: The number range interval for the specified company code has not been defined in the system. Incorrect Configuration: The number range might be incorrectly configured or not assigned to the relevant document type. Inactive Number Range: The number range might be inactive or not available for the current fiscal year or period. Authorization Issues: The user may not have the necessary authorizations to access or create documents in the specified number range.
Solution: To resolve the FI637 error, follow these steps: Check Number Range Configuration: Go to the transaction code SNRO (Number Range Objects). Enter the relevant number range
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