How To Fix AD178 - Field & specified twice. (Saving not possible)

AD178 - Overview

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 178

• Message text: Field & specified twice. (Saving not possible)

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 AD178 - Field & specified twice. (Saving not possible) ?

  The SAP error message AD178 ("Field & specified twice. (Saving not possible)") typically occurs when there is an issue with the data being processed in a transaction or during the saving of a document. This error indicates that a field has been defined or specified more than once, which is not allowed in the context of the operation being performed.
  Causes:
  
  Duplicate Field Entries: The most common cause is that the same field has been entered multiple times in a form or data entry screen.
  Custom Development: If there are custom programs or enhancements (like user exits or BAdIs) that manipulate data, they might inadvertently cause fields to be duplicated.
  Data Model Issues: In some cases, issues with the underlying data model or database structure can lead to this error.
  Configuration Errors: Incorrect configuration in the system, such as in the data dictionary or screen layout, can also lead to this error.
  
  Solutions:
  
  Check for Duplicates: Review