Message type: E = Error
Message class:  SD_FREE_GOODS_MSG - Message class for Free Goods maintenance 
Message number: 027
Message text: Unit for additional quantity is required.
Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.
To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.
Unfortunately, there isn't any extra information in this error notice.
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The SAP error message SD_FREE_GOODS_MSG027 ("Unit for additional quantity is required") typically occurs in the context of free goods processing in the Sales and Distribution (SD) module. This error indicates that the system requires a unit of measure for the additional quantity of free goods being processed in a sales order or delivery.
Cause:
The error is usually caused by one of the following reasons:
Missing Unit of Measure: The additional quantity for free goods has not been assigned a unit of measure in the sales order or delivery.
Configuration Issues: The configuration for free goods in the system may not be set up correctly, leading to the requirement for a unit of measure not being fulfilled.
Master Data Issues: The material master data for the product may not have the necessary unit of measure defined for free goods.
Solution:
To resolve this error, you can take the following steps:
Check Sales Order/Delivery:
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