Message type: E = Error
Message class:  /ACCGO/CAS_FLLW_MSG -  
Message number: 453
Message text: Vendor is mandatory
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The SAP error message /ACCGO/CAS_FLLW_MSG453 Vendor is mandatory typically occurs in the context of financial accounting or logistics processes where a vendor (supplier) is required but not provided in the transaction or document being processed. This error is common in scenarios involving accounts payable, procurement, or any transaction that requires vendor information.
Cause: Missing Vendor Information: The most common cause is that the vendor field is left blank in the transaction or document. Incorrect Configuration: There may be configuration settings in the system that require a vendor to be specified for certain types of transactions. Data Entry Error: The user may have inadvertently skipped the vendor field or entered an incorrect value. Document Type Restrictions: Certain document types may have mandatory fields that must be filled out, including the vendor.
Solution: Check Vendor Field: Ensure that the vendor field is filled out correctly in the transaction. If you are creating a purchase order, invoice, or any related
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