Message type: E = Error
Message class:  GOODSMOVEMENT - Messages for PP goods movements 
Message number: 021
Message text: Select the goods movements that are to be split
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The SAP error message GOODSMOVEMENT021 typically occurs during the process of splitting goods movements in the system. This error indicates that the system requires you to select the specific goods movements that you want to split. Here’s a breakdown of the cause, potential solutions, and related information:
Cause: Selection Requirement: The error arises when the system expects you to select one or more goods movements for splitting, but none have been selected. Incorrect Process Flow: The user may not have followed the correct steps in the transaction to initiate the split of goods movements. Authorization Issues: Sometimes, the user may not have the necessary permissions to perform the split operation.
Solution: Select Goods Movements: Ensure that you have selected the goods movements you wish to split. This can usually be done by checking the selection boxes next to the relevant entries in the transaction screen. Follow Correct Procedure: Make sure you are following the correct procedure for
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