Message type: E = Error
Message class:  5J - Error messages HR Master Data Japan 
Message number: 840
Message text: No business office under Santei Geppen rule & is specified.
No selected business office(social insurance modifier) matches the
specified Santei Geppen rule.
All the business offices whose Santei Geppen rule is the same as the
specified Santei Geppen rule can be processed by the program.
Select appropriate business office (social insurance modifier) for the
specified Santei Geppen rule.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message "5J840 No business office under Santei Geppen rule & is specified" typically occurs in the context of SAP's financial or logistics modules, particularly when dealing with specific business rules or configurations related to the Santei Geppen (which may refer to a specific Japanese accounting or financial regulation).
Cause: Missing Configuration: The error usually indicates that there is no business office defined in the system that corresponds to the Santei Geppen rule. This could be due to a lack of configuration in the system for the specific business office or organizational unit. Incorrect Data Entry: It may also arise from incorrect or incomplete data entry when trying to execute a transaction that requires a business office to be specified. Master Data Issues: The relevant master data (such as business offices or organizational units) may not be set up correctly or may be missing.
Solution: Check Configuration: Go to the configuration settings in SAP
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