How To Fix /SAPAPO/OO_TR_CLASS016 - SIGN field is not CHAR1 type

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/OO_TR_CLASS -

• Message number: 016

• Message text: SIGN field is not CHAR1 type

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/OO_TR_CLASS016 - SIGN field is not CHAR1 type ?

  The SAP error message /SAPAPO/OO_TR_CLASS016 SIGN field is not CHAR1 type typically occurs in the context of SAP Advanced Planning and Optimization (APO) when there is an issue with the data type of a field that is expected to be a single character (CHAR1) but is not.
  Cause:
  
  
  Data Type Mismatch: The error indicates that a field that is expected to be of type CHAR1 (which can only hold a single character, such as 'Y' or 'N') is receiving a value that does not conform to this requirement. This could happen if:
  
  The field is being populated with a string longer than one character.
  The field is being populated with a non-character value (e.g., numeric or special characters).
  There is a programming error in a custom ABAP program or user exit that is incorrectly handling the data.
  
  
  
  Configuration Issues: Sometimes, the configuration settings in APO or the integration with other SAP modules may lead to incorrect data being passed to the system.
  
  
  Solution:
  
  
  Check Data Input: Review the data being input into the system. Ensure that any field expected to be CHAR1 is only receiving single-character values. This may involve:
  
  Validating user inputs in custom screens or transactions.
  Checking data being imported from external systems or files.
  
  
  
  Review Custom Code: If there is custom ABAP code involved, review it to ensure that it correctly handles the data types. Look for any assignments or data manipulations that might lead to a CHAR1 field being populated with an invalid value.
  
  
  Debugging: Use the SAP debugger to trace the execution of the program or transaction that is causing the error. This can help identify where the incorrect value is being assigned.
  
  
  Configuration Review: If the error is related to configuration settings, review the relevant settings in the APO system to ensure they are correctly defined.
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error or provide guidance on similar issues.
  
  
  Related Information:
  
  SAP APO Documentation: Review the official SAP documentation for APO to understand the expected data types and structures.
  Data Dictionary: Use transaction SE11 to check the data dictionary for the specific table or structure that is causing the error. This can provide insights into the expected data types.
  Community Forums: Consider searching or posting on SAP community forums or sites like SAP Community, Stack Overflow, or SAP Answers for additional insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.