How To Fix /SAPAPO/ATP156 - You cannot activate third-party and RBA or production together

/SAPAPO/ATP156 - Overview

• Message type: E = Error

• Message class: /SAPAPO/ATP -

• Message number: 156

• Message text: You cannot activate third-party and RBA or production together

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/ATP156 - You cannot activate third-party and RBA or production together ?

  The SAP error message /SAPAPO/ATP156 indicates that there is a conflict in the configuration of the Advanced Planning and Optimization (APO) system regarding the activation of third-party processing and the use of RBA (Resource-Based Allocation) or production together. This error typically arises when a user attempts to activate both third-party processing and production or RBA for the same product or order type, which is not allowed in the system.
  
  Cause:
  
  Configuration Conflict: The system is designed to prevent the simultaneous activation of third-party processing and production/RBA for the same product. This is because these processes have different logistics and planning implications.
  Master Data Settings: The product master or the configuration settings for the order type may have conflicting settings that lead to this error.
  Planning Strategy: The planning strategy assigned to the product may not support the combination of third-party processing and production.
  
  
  Solution:
  
  Review Configuration: Check the configuration settings in the APO system to ensure