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

UPC525 - Overview

• 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.

UPC525 - Details

• 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