How To Fix /SAPAPO/PPM_MAINTAIN166 - Assign a primary resource for mode &1

/SAPAPO/PPM_MAINTAIN166 - Overview

• Message type: E = Error

• Message class: /SAPAPO/PPM_MAINTAIN -

• Message number: 166

• Message text: Assign a primary resource for mode &1

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 /SAPAPO/PPM_MAINTAIN166 - Assign a primary resource for mode &1 ?

  The SAP error message /SAPAPO/PPM_MAINTAIN166 indicates that a primary resource has not been assigned for a specific mode in the Production Planning and Detailed Scheduling (PP/DS) module of SAP Advanced Planning and Optimization (APO). This error typically arises when you are trying to create or modify a production plan, and the system requires a primary resource to be defined for the specified mode of operation.
  
  Cause:
  
  Missing Resource Assignment: The primary resource for the production mode has not been assigned in the system.
  Incorrect Configuration: The configuration for the production mode may not be set up correctly in the resource master data.
  Resource Not Active: The resource may not be active or available for the specified planning period.
  Mode Definition Issues: The mode itself may not have been properly defined or linked to the resource.
  
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Resource Master Data:
  
  Go to the resource master data in SAP APO.
  Ensure that