Message type: E = Error
Message class:  FKKINV - Invoicing in Contract Accounts Receivable and Payable 
Message number: 629
Message text: Source document category &1 is not processed by target process &2
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The SAP error message FKKINV629 indicates that there is a mismatch between the source document category and the target process in the context of the SAP Convergent Invoicing (CI) or Contract Accounts Receivable and Payable (FI-CA) modules. This error typically arises when you are trying to process a document that is not compatible with the target process you are using.
Cause: The error occurs due to one of the following reasons: Incompatible Document Types: The source document category (e.g., invoice, credit memo) is not supported by the target process (e.g., billing, payment processing).
Configuration Issues: The configuration settings in the system may not be set up correctly to allow the processing of certain document types in the specified target process. Missing Customization: There may be missing or incorrect entries in the customizing settings that define which document categories can be processed by which target processes.
Solution: To resolve the error, you can take the following steps: Check Document
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