How To Fix ICC_CN863 - External document number & assigned

ICC_CN863 - Overview

• Message type: E = Error

• Message class: ICC_CN - Nachrichten zum Druck vornumerierter SD-Belege

• Message number: 863

• Message text: External document number & assigned

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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ICC_CN863 - Details

• The SAP error message ICC_CN863 typically indicates that there is an issue with the external document number that has been assigned in the context of a business transaction, such as a contract or a document related to a project. This error can occur in various modules, including Project System (PS) or Controlling (CO), and it usually signifies that the external document number is either missing, duplicated, or not properly formatted.
  
  Cause:
  
  Missing External Document Number: The system expects an external document number to be provided, but it is either not entered or is blank.
  Duplicate External Document Number: The external document number being entered already exists in the system, leading to a conflict.
  Incorrect Format: The external document number may not conform to the expected format or length defined in the system settings.
  
  Configuration Issues: There may be configuration settings in the SAP system that are not properly set up to handle external document numbers.
  
  
  Solution:
  
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