How To Fix K8129 - Resource &1 can only be planned with material &2 under cost element &3

SAP Error Message - Details

• Message type: E = Error

• Message class: K8 - CO Planning: Messages for Function Group KAPP

• Message number: 129

• Message text: Resource &1 can only be planned with material &2 under cost element &3

What causes this issue?

You want to plan resource &V1& under cost element &V4&. In the master
record for this resource you defined that it should be costed with
material &V2&. However, in material &V2& it is defined that it can only
be planned under cost element &V3&. This means that the system cannot
determine a valid price using the combination you have selected.

System Response

In planning, the system takes a resource price of zero for the
valuation.

How to fix this error?

Plan the resource under cost element &V3&, or, if required, change the
cost element of material &V2& to &V4&.
Note that in both cases, the system does not trigger automatic
recalculation of any records that may exist on the database. You should
therefore carry out the recalculation manually (Planning: Initial
Screen: Extras -> Resource Planning -> Recalculation).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message K8129 - Resource &1 can only be planned with material &2 under cost element &3 ?

  The SAP error message K8129 indicates that there is a restriction on planning a resource (like a machine or labor) with a specific material under a certain cost element. This error typically arises in the context of production planning or cost planning within SAP, particularly when using the Controlling (CO) module.
  Cause:
  The error message K8129 is triggered when:
  
  Resource and Material Mismatch: The resource you are trying to plan is not allowed to be used with the specified material under the given cost element. This could be due to configuration settings in the system.
  Cost Element Configuration: The cost element may not be set up to allow planning for the specified resource and material combination.
  Master Data Issues: There may be issues with the master data for the resource, material, or cost element that restricts their combination.
  
  Solution:
  To resolve the K8129 error, you can take the following steps:
  
  
  Check Resource and Material Configuration:
  
  Verify the configuration settings for the resource and the material in the system. Ensure that the resource is allowed to be used with the specified material.
  
  
  
  Review Cost Element Settings:
  
  Check the configuration of the cost element in the Controlling module. Ensure that it is set up to allow planning for the resource and material combination you are trying to use.
  
  
  
  Master Data Review:
  
  Review the master data for the resource, material, and cost element. Ensure that all relevant data is correctly maintained and that there are no restrictions preventing the combination.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific details on the configuration of resources, materials, and cost elements.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance. They can provide insights based on the specific configuration of your SAP system.
  
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like CS01 (Create BOM), CR01 (Create Work Center), or KP26 (Change Plan Data) to check or modify the relevant data.
  SAP Notes: Look for relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  User Roles and Authorizations: Ensure that you have the necessary authorizations to make changes to the resource, material, and cost element configurations.
  
  By following these steps, you should be able to identify the root cause of the K8129 error and implement a solution to resolve it.