Message type: E = Error
Message class:  WXPA - MAP: External Applications 
Message number: 015
Message text: Invalid key figure &1 has been assigned
You have assigned key figure &V1& in the interface. This key figure is,
however, not used in the planning scenario selected.
The interface definition is not valid.
Delete key figure &V1& from the key figure assignment.
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.
Certainly! Here's a detailed explanation for the SAP error message WXPA015: Invalid key figure &1 has been assigned: Error Message WXPA015: Invalid key figure &1 has been assigned Cause This error typically occurs in SAP BW (Business Warehouse) or SAP BI (Business Intelligence) when there is an issue with the assignment of key figures in a query or a report. Specifically: The key figure referenced (represented by &1 in the message) is not valid in the context where it is being used. The key figure might not exist in the InfoProvider or the underlying data source. The key figure might have been deleted, renamed, or is not included in the query definition. There could be a mismatch between the key figure assigned in the query and the actual key figures available in the InfoProvider or the BEx query. Sometimes, this error can occur if the query or report is transported from one system to another and the key figure
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