How To Fix /SAPAPO/DMRES158 - Maint. of quant. cap. for mixed resource with deduction is not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/DMRES -

• Message number: 158

• Message text: Maint. of quant. cap. for mixed resource with deduction is not possible

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/DMRES158 - Maint. of quant. cap. for mixed resource with deduction is not possible ?

  The SAP error message /SAPAPO/DMRES158 indicates that there is an issue with maintaining the quantitative capacity for a mixed resource when deductions are involved. This error typically arises in the context of Advanced Planning and Optimization (APO) in SAP, particularly when dealing with capacity planning and resource management.
  Cause:
  
  
  Mixed Resource Configuration: The resource in question is configured as a mixed resource, which means it can handle different products or product variants. However, there may be restrictions or settings that prevent the maintenance of capacity when deductions are applied.
  
  
  Deductions Not Allowed: The system may not allow deductions for the specific resource type or configuration. Deductions are typically used to account for capacity that is not available due to maintenance, setup times, or other constraints.
  
  
  Incorrect Settings: There may be incorrect settings in the resource master data or in the planning book that lead to this error. This could include capacity planning settings, resource allocation, or the way deductions are defined.
  
  
  Capacity Planning Profile: The capacity planning profile assigned to the resource may not support the maintenance of quantitative capacity with deductions.
  
  
  Solution:
  
  
  Review Resource Configuration: Check the configuration of the mixed resource in the resource master data. Ensure that it is set up correctly to handle deductions.
  
  
  Adjust Deductions: If deductions are not necessary for this resource, consider removing or adjusting them. This may involve changing the settings in the resource master data or the planning book.
  
  
  Check Capacity Planning Profile: Review the capacity planning profile assigned to the resource. Ensure that it allows for the maintenance of capacity with deductions.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on managing mixed resources and deductions. This can provide insights into best practices and configuration settings.
  
  
  Testing: After making changes, test the configuration to ensure that the error no longer occurs and that capacity can be maintained as expected.
  
  
  SAP Support: If the issue persists, consider reaching out to SAP support for further assistance. They can provide more detailed insights based on the specific configuration and version of your SAP system.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide updates and patches that could resolve the issue.
  Training and Documentation: Review training materials or documentation related to capacity planning and resource management in SAP APO to better understand the implications of mixed resources and deductions.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.