How To Fix FCO_API_AT_MSG000 - Update for key field &1 is not allowed.

FCO_API_AT_MSG000 - Overview

• Message type: E = Error

• Message class: FCO_API_AT_MSG -

• Message number: 000

• Message text: Update for key field &1 is not allowed.

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message FCO_API_AT_MSG000 - Update for key field &1 is not allowed. ?

  The SAP error message FCO_API_AT_MSG000 with the description "Update for key field &1 is not allowed" typically occurs when there is an attempt to update a key field in a database table that is not permitted. Key fields are essential for identifying records uniquely, and modifying them can lead to data integrity issues.
  
  Cause:
  
  Key Field Modification: The error is triggered when an update operation tries to change a key field (like a primary key) in a table where such changes are restricted.
  Business Logic Restrictions: Certain business processes or configurations may prevent updates to key fields to maintain data consistency.
  Authorization Issues: The user may not have the necessary permissions to perform updates on the key fields.
  Data Model Constraints: The underlying data model may have constraints that prevent updates to specific fields.
  
  
  Solution:
  
  Review the Update Logic: Check the code or process that is attempting to update the key field. Ensure that it is not