How To Fix AR166 - POR check digit contains characters not permitted

AR166 - Overview

• Message type: E = Error

• Message class: AR - SSRV function module messages

• Message number: 166

• Message text: POR check digit contains characters not permitted

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 AR166 - POR check digit contains characters not permitted ?

  The SAP error message AR166, which states "POR check digit contains characters not permitted," typically occurs in the context of processing Purchase Order Requisitions (POR) or similar documents where a check digit is used for validation purposes. This error indicates that the check digit of a document contains invalid characters, which can prevent the document from being processed correctly.
  
  Cause:
  
  Invalid Characters: The check digit may contain characters that are not allowed, such as letters or special symbols, instead of just numeric digits.
  Data Entry Errors: Manual entry of the check digit may have introduced invalid characters.
  System Configuration: The system may be configured to expect a specific format for the check digit, and the current input does not meet that format.
  Data Migration Issues: If data was migrated from another system, the check digit may not have been formatted correctly.
  
  
  Solution:
  
  Verify Input: Check the input for the check digit and ensure that it only contains