How To Fix WPLG010 - Plan structure & is not based on materials; material index not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: WPLG - Interfaces for Space Management

• Message number: 010

• Message text: Plan structure & is not based on materials; material index not possible

Self-Explanatory Message

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• What is the cause and solution for SAP error message WPLG010 - Plan structure & is not based on materials; material index not possible ?

  The SAP error message:
  WPLG010: Plan structure & is not based on materials; material index not possible
  
  Cause:
  This error occurs in SAP Production Planning (PP) or Product Cost Planning (PCP) when the plan structure used in a planning or costing run is not based on materials. Specifically, the system expects the plan structure to be material-based to create or use a material index, but the current plan structure is not set up accordingly.
  
  The plan structure defines the hierarchy or structure of the plan (e.g., product groups, materials, etc.).
  If the plan structure is not based on materials, the system cannot generate a material index, which is necessary for certain planning or costing functions.
  This often happens if the plan structure is incorrectly defined or if the plan structure assigned to the planning run is not suitable for material-based planning.
  
  
  Solution:
  
  
  Check the Plan Structure Definition:
  
  Go to transaction WPLG (Plan Structure Maintenance).
  Verify that the plan structure assigned to your planning or costing run is based on materials.
  The plan structure should include materials as the lowest level or key element.
  
  
  
  Assign Correct Plan Structure:
  
  If the current plan structure is not material-based, assign a different plan structure that is material-based to your planning run.
  This can be done in the planning run parameters or in the customizing settings.
  
  
  
  Adjust Planning Run Settings:
  
  In the planning run (e.g., transaction CK40N for cost planning), ensure that the plan structure used is compatible with material-based planning.
  If necessary, create or modify a plan structure that includes materials.
  
  
  
  Check Master Data:
  
  Ensure that the materials involved in the planning run are correctly maintained and assigned to the plan structure.
  
  
  
  Consult SAP Notes:
  
  Sometimes, specific SAP Notes address this error with patches or detailed instructions.
  
  
  
  
  Related Information:
  
  Plan Structure (WPLG): Defines the hierarchy for planning, e.g., product groups, materials, etc.
  Material Index: Used in planning and costing to uniquely identify materials in the plan.
  Transactions:
  
  WPLG: Maintain Plan Structures
  CK40N: Costing Run
  CK11N: Single-level Costing
  
  
  SAP Modules: Production Planning (PP), Product Cost Planning (PCP)
  SAP Help: Refer to SAP Help Portal for Plan Structures and Costing Run documentation.
  
  
  Summary:
  The error WPLG010 indicates that the plan structure used is not material-based, preventing the creation of a material index. To fix this, ensure that the plan structure assigned to your planning or costing run is based on materials by checking and adjusting the plan structure settings in transaction WPLG and the planning run parameters.