Message type: E = Error
Message class:  RSO_RES_QMSGS - Messages directly related to Query Designer. 
Message number: 129
Message text: Variable cannot be used for assigned target object. &1
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The SAP error message RSO_RES_QMSGS129 indicates that a variable cannot be used for the assigned target object. This typically occurs in the context of SAP BW (Business Warehouse) when working with queries, variables, or InfoProviders.
Cause: The error can arise due to several reasons: Incompatible Variable Type: The variable you are trying to use may not be compatible with the target object (e.g., InfoObject, InfoProvider, or query). Variable Assignment: The variable might not be correctly assigned to the target object or is not defined properly in the context of the query. Missing Characteristics: The target object may require certain characteristics that the variable does not fulfill. Incorrect Context: The variable might be defined in a context that does not match the target object’s requirements.
Solution: To resolve the error, you can take the following steps: Check Variable Definition: Go to the variable definition in the SAP BW system and ensure that it is defined correctly. Verify that the variable type matches
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