Message type: E = Error
Message class:  SD_FREE_GOODS_MSG - Message class for Free Goods maintenance 
Message number: 010
Message text: Free goods type '&1' not defined.
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The SAP error message SD_FREE_GOODS_MSG010 indicates that a free goods type specified in a sales document is not defined in the system. This error typically occurs in the Sales and Distribution (SD) module when trying to process a sales order that includes free goods.
Cause: The error is caused by one of the following reasons: Undefined Free Goods Type: The free goods type specified in the sales order does not exist in the system.
Configuration Issues: The free goods type may not have been properly configured in the system. Incorrect Sales Document Type: The sales document type being used may not be set up to handle free goods.
Solution: To resolve this error, you can follow these steps: Check Free Goods Configuration: Go to the SAP Customizing Implementation Guide (SPRO). Navigate to Sales and Distribution > Basic Functions > Free Goods > Define Free Goods Types. Ensure that the free goods type you are trying to use is defined and configured
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