How To Fix /SAPAPO/DMRES126 - The planning version was not selected in the initial screen

/SAPAPO/DMRES126 - Overview

• Message type: E = Error

• Message class: /SAPAPO/DMRES -

• Message number: 126

• Message text: The planning version was not selected in the initial screen

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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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/DMRES126 - The planning version was not selected in the initial screen ?

  The SAP error message /SAPAPO/DMRES126 indicates that the planning version was not selected in the initial screen of the Demand Planning (DP) or Supply Network Planning (SNP) module in SAP Advanced Planning and Optimization (APO). This error typically occurs when a user attempts to execute a planning function or transaction without specifying a valid planning version.
  
  Cause:
  
  No Planning Version Selected: The most common cause is that the user did not select a planning version in the initial screen of the transaction.
  Default Planning Version Not Set: The system may not have a default planning version configured, leading to the absence of a pre-selected version.
  User Authorization Issues: In some cases, the user may not have the necessary authorizations to view or select certain planning versions.
  
  
  Solution:
  
  
  Select a Planning Version:
  
  Go back to the initial screen of the transaction where the error occurred.
  Look for the field labeled "Planning Version" or similar.
  Select a valid planning version from