How To Fix /SAPAPO/OM_ERROR2139 - Write mode for creating a trace file is neither 'open' nor 'append'

/SAPAPO/OM_ERROR2139 - Overview

• Message type: E = Error

• Message class: /SAPAPO/OM_ERROR2 -

• Message number: 139

• Message text: Write mode for creating a trace file is neither 'open' nor 'append'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/OM_ERROR2139 - Write mode for creating a trace file is neither 'open' nor 'append' ?

  The SAP error message /SAPAPO/OM_ERROR2139 indicates that there is an issue with the mode specified for creating a trace file in the SAP Advanced Planning and Optimization (APO) system. The error message specifically states that the write mode for creating a trace file is neither 'open' nor 'append', which means that the system is unable to determine how to handle the trace file correctly.
  
  Cause:
  
  Incorrect Write Mode: The write mode specified for the trace file is not valid. The system expects either 'open' (to create a new file) or 'append' (to add to an existing file).
  
  Configuration Issues: There may be a misconfiguration in the settings related to trace file generation in the APO system.
  Code Issues: If this error arises from custom code or enhancements, there may be a bug or oversight in how the trace file is being handled.
  
  
  Solution:
  
  Check Configuration: Review the configuration settings related to trace file generation in the