How To Fix CY131 - Please enter a unique sort sequence

SAP Error Message - Details

• Message type: E = Error

• Message class: CY - Capacity Requirements Planning

• Message number: 131

• Message text: Please enter a unique sort sequence

What causes this issue?

In the settings for the "operations per work center" graphic
(Gantt chart), you can specify the criteria and sequence according to
which the system is to sort operations in the graphic (earliest start,
material number, order number, order type, order priority, latest finish
date). The sort sequence must be unique - that is, no two fields may
have the same sort position.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CY131 - Please enter a unique sort sequence ?

  The SAP error message CY131: "Please enter a unique sort sequence" typically occurs in the context of creating or modifying a sort sequence in SAP, particularly in the areas of logistics or material management. This error indicates that the sort sequence you are trying to enter is not unique, meaning that there is already an existing sort sequence with the same identifier or characteristics.
  Cause:
  
  Duplicate Entry: The most common cause of this error is that the sort sequence you are trying to create or modify already exists in the system.
  Incorrect Data Entry: There may be a mistake in the data entry, such as entering the same sort sequence for different criteria or not following the required format.
  Configuration Issues: There might be issues in the configuration settings that lead to conflicts in sort sequence definitions.
  
  Solution:
  
  
  Check Existing Sort Sequences: 
  
  Navigate to the relevant transaction (e.g., transaction code OMS2 for sort sequences) and check the existing sort sequences to see if the one you are trying to enter already exists.
  If it does, you may need to modify the existing entry instead of creating a new one.
  
  
  
  Use a Unique Identifier: 
  
  Ensure that the sort sequence you are trying to create has a unique identifier. This may involve changing the name or characteristics of the sort sequence to avoid duplication.
  
  
  
  Review Configuration Settings: 
  
  If you suspect configuration issues, review the settings in the relevant customizing transactions to ensure that there are no conflicts or misconfigurations.
  
  
  
  Consult Documentation: 
  
  Refer to SAP documentation or help resources for specific guidelines on creating sort sequences in your version of SAP.
  
  
  
  Contact Support: 
  
  If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as OMS2 (for maintaining sort sequences) or OMS1 (for defining sort criteria).
  SAP Notes: Check SAP Notes for any known issues or patches related to sort sequences that might be applicable to your version of SAP.
  User Manuals: Review user manuals or training materials specific to your organization’s SAP implementation for additional context on managing sort sequences.
  
  By following these steps, you should be able to identify the cause of the CY131 error and implement a solution to resolve it.