Message type: E = Error
Message class:  FMHIE - Budget Hierarchies 
Message number: 400
Message text: Reserved for Export / Import Multi Level Budget Structure
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The SAP error message FMHIE400, which states "Reserved for Export / Import Multi Level Budget Structure," typically occurs in the context of budget management within the SAP system, particularly when dealing with the Funds Management (FM) module. This error is related to the configuration and handling of budget structures, especially when exporting or importing budget data.
Cause:
Configuration Issues: The error may arise due to incorrect configuration of the budget structure in the Funds Management module. This could include issues with the hierarchy or levels defined for the budget. Data Import/Export Problems: If you are trying to import or export budget data, the structure of the data may not match the expected format or hierarchy defined in the system. Missing Authorizations: Sometimes, the user may not have the necessary authorizations to perform the import/export operation, leading to this error. Incompatibility: The budget structure being used may not be compatible with the current settings or version
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