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

/SAPAPO/OO_TR_CLASS016 - Overview

• Message type: E = Error

• Message class: /SAPAPO/OO_TR_CLASS -

• Message number: 016

• Message text: SIGN field is not CHAR1 type

Self-Explanatory Message

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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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/SAPAPO/OO_TR_CLASS016 - Details

• 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