How To Fix /SAPAPO/ATP018 - Requirements scheduling index &1 does not exist in the reference table

/SAPAPO/ATP018 - Overview

• Message type: E = Error

• Message class: /SAPAPO/ATP -

• Message number: 018

• Message text: Requirements scheduling index &1 does not exist in the reference table

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/ATP018 - Requirements scheduling index &1 does not exist in the reference table ?

  The SAP error message /SAPAPO/ATP018 Requirements scheduling index &1 does not exist in the reference table typically occurs in the context of Advanced Planning and Optimization (APO) when the system is unable to find a specific scheduling index for a given requirement. This can happen for various reasons, including data inconsistencies or missing configurations.
  
  Cause:
  
  Missing Scheduling Index: The scheduling index for the specified requirement does not exist in the reference table. This can occur if the index has not been created or if it has been deleted.
  Data Inconsistencies: There may be inconsistencies in the master data or transaction data that prevent the system from locating the required index.
  
  Configuration Issues: Incorrect configuration settings in the APO system can lead to the absence of the required scheduling index.
  Transport Issues: If the system has recently undergone a transport of changes, the scheduling index may not have been transported correctly.
  
  
  Solution:
  
  
  Recreate the Scheduling Index:
  
  Use transaction /SAPAPO/SDP94