How To Fix 29639 - Field & is not a unit field (data type UNIT)

29639 - Overview

• Message type: E = Error

• Message class: 29 - Bills of Material

• Message number: 639

• Message text: Field & is not a unit field (data type UNIT)

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message 29639 - Field & is not a unit field (data type UNIT) ?

  The SAP error message 29639, which states "Field & is not a unit field (data type UNIT)," typically occurs when there is an attempt to use a field that is expected to be of the data type "UNIT" (unit of measure) but is not defined as such in the system. This can happen in various contexts, such as during data entry, report generation, or when executing certain transactions.
  
  Cause:
  
  Incorrect Field Definition: The field in question is not defined as a unit field in the data dictionary (DDIC). This could be due to a configuration error or a misunderstanding of the data model.
  Data Type Mismatch: The program or transaction is expecting a field of type UNIT, but the field provided is of a different data type (e.g., CHAR, NUMC, etc.).
  Custom Development Issues: If there are custom programs or enhancements, they may not be correctly handling unit fields, leading to this error.
  
  
  Solution:
  
  Check Field