Message type: E = Error
Message class:  RPM_LCC - Messages for the Test Log for the liveCache Routines 
Message number: 018
Message text: Incorrect matrix type transferred to PICK_M_HANDLE
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The SAP error message RPM_LCC018, which states "Incorrect matrix type transferred to PICK_M_HANDLE," typically occurs in the context of SAP's Logistics and Supply Chain Management modules, particularly when dealing with matrix handling or picking processes.
Cause: This error usually arises due to one of the following reasons: Incorrect Matrix Configuration: The matrix type being used in the picking process may not be correctly configured or may not match the expected type in the system. Data Inconsistency: There may be inconsistencies in the data being passed to the function module or method that handles the picking process. This could be due to incorrect or missing parameters. Custom Code Issues: If there are custom enhancements or modifications in the picking process, they may not be handling the matrix types correctly. Version Compatibility: If there are updates or changes in the SAP version, the matrix handling logic may have changed, leading to incompatibility with existing configurations.
Solution: To resolve the RPM_LCC018
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