How To Fix CO406 - Fill all key fields (&)

SAP Error Message - Details

• Message type: E = Error

• Message class: CO - PPC order processing messages

• Message number: 406

• Message text: Fill all key fields (&)

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 CO406 - Fill all key fields (&) ?

  The SAP error message CO406 "Fill all key fields (&)" typically occurs in the context of controlling (CO) module transactions, particularly when you are trying to create or modify a cost object, such as a cost center, internal order, or project. This error indicates that certain mandatory fields that are required for the transaction have not been filled in.
  
  Cause:
  The error is triggered when the system detects that one or more key fields that are necessary for the transaction are missing or incomplete. Key fields can include:
  
  Cost Center
  Internal Order
  Activity Type
  Version
  Fiscal Year
  Period
  Other relevant identifiers depending on the specific transaction
  
  
  Solution:
  To resolve the CO406 error, follow these steps:
  
  
  Identify Missing Fields: Review the transaction screen where the error occurred and identify which key fields are highlighted or indicated as missing. The error message may provide hints about which fields need to be filled.
  
  
  Fill in Required Fields: Ensure that all mandatory fields are filled in correctly.