How To Fix UPC525 - No combination could be generated in step &1

SAP Error Message - Details

• Message type: E = Error

• Message class: UPC - Planning: General Error Messages

• Message number: 525

• Message text: No combination could be generated in step &1

What causes this issue?

The planning layout was parameterized so that combinations should be
formed for all characteristics of the planning level, in accordance
with the maintenance of characteristic relationships. However, in the
current step &V1& no combination was generated.

System Response

Since no valid combinations can be formed within the selection, manual
planning is not possible.,,,,

How to fix this error?

If required, correct the settings for step &V1& in the context of the
current planning area &V2&, in the maintenance of the characteristic
relationships.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message UPC525 - No combination could be generated in step &1 ?

  The SAP error message UPC525 ("No combination could be generated in step &1") typically occurs in the context of SAP's Advanced Planning and Optimization (APO) module, particularly during the planning process. This error indicates that the system was unable to generate a valid combination of planning data based on the parameters and settings defined in the planning run.
  Causes:
  
  Missing Master Data: The required master data (like materials, resources, or locations) may not be set up correctly or may be missing.
  Incorrect Planning Parameters: The planning parameters or settings in the planning run may not align with the available data.
  Data Inconsistencies: There may be inconsistencies or errors in the data that prevent the generation of combinations.
  Planning Version Issues: The planning version being used may not be correctly configured or may not have the necessary data.
  Selection Criteria: The selection criteria defined for the planning run may be too restrictive, leading to no valid combinations being found.
  
  Solutions:
  
  Check Master Data: Ensure that all necessary master data (materials, resources, locations) is correctly maintained and available in the system.
  Review Planning Parameters: Verify the planning parameters and settings in the planning run to ensure they are appropriate for the data being processed.
  Data Consistency Check: Run consistency checks on the data to identify and resolve any inconsistencies or errors.
  Adjust Selection Criteria: If the selection criteria are too restrictive, consider broadening them to allow for more combinations to be generated.
  Check Planning Version: Ensure that the correct planning version is being used and that it contains the necessary data for the planning process.
  Consult Documentation: Review SAP documentation or notes related to the specific planning process you are using for any additional guidance or troubleshooting steps.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /SAPAPO/SDP94 for planning and /SAPAPO/MC90 for master data checks.
  SAP Notes: Check for any SAP Notes related to the UPC525 error for specific patches or updates that may address known issues.
  Community Forums: Engage with SAP community forums or support channels for insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to involve your SAP support team or consult with an SAP expert for further analysis and resolution.