How To Fix MM_IM_ODATA_API_MDOC021 - Assignment of Serial Number &1 to Material Document Item is missing

SAP Error Message - Details

• Message type: E = Error

• Message class: MM_IM_ODATA_API_MDOC - Messages for Material Document OData API

• Message number: 021

• Message text: Assignment of Serial Number &1 to Material Document Item is missing

Self-Explanatory Message

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message MM_IM_ODATA_API_MDOC021 - Assignment of Serial Number &1 to Material Document Item is missing ?

  The SAP error message MM_IM_ODATA_API_MDOC021 indicates that there is an issue with the assignment of a serial number to a material document item during an inventory management operation. This error typically occurs when you are trying to post a goods movement (like goods receipt or goods issue) for a material that requires serial number tracking, but the serial number has not been properly assigned or is missing.
  
  Cause:
  
  Missing Serial Number: The most common cause is that the serial number for the material document item is not provided or is not correctly assigned in the system.
  Incorrect Configuration: The material may be configured in such a way that it requires serial number tracking, but the necessary data is not being supplied during the transaction.
  Data Entry Error: There may be a mistake in the data entry process, where the serial number is either not entered or entered incorrectly.
  System Configuration: The system may not be