How To Fix WSFP_MESSAGE012 - Material group &1 is not assigned to a hierarchy

SAP Error Message - Details

• Message type: E = Error

• Message class: WSFP_MESSAGE - Message Class for Integrating In-Store Production

• Message number: 012

• Message text: Material group &1 is not assigned to a hierarchy

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WSFP_MESSAGE012 - Material group &1 is not assigned to a hierarchy ?

  The SAP error message:
  WSFP_MESSAGE012: Material group &1 is not assigned to a hierarchy
  
  Cause:
  This error occurs when a material group (material group code &1) is used in a process that requires the material group to be assigned to a material group hierarchy, but it is not assigned. Material group hierarchies are used in various SAP modules (e.g., Logistics, Sales, and Distribution, or Warehouse Management) to structure material groups for reporting, planning, or process control.
  For example, in SAP Warehouse Management (WM) or Extended Warehouse Management (EWM), material groups must be assigned to a hierarchy to enable certain functions like categorization, reporting, or process determination.
  
  Solution:
  
  
  Assign the Material Group to a Material Group Hierarchy:
  
  
  Go to the transaction where material group hierarchies are maintained. This depends on the module:
  
  For SAP ERP Logistics: Use transaction OMS2 (Define Material Group Hierarchy).
  For SAP EWM: Use the relevant IMG path or EWM customizing to assign material groups to hierarchies.
  
  
  
  In OMS2:
  
  Enter the relevant material group hierarchy.
  Assign the material group (&1) to the hierarchy node.
  Save the changes.
  
  
  
  
  
  Check the Material Master:
  
  Verify that the material master record has the correct material group assigned.
  Ensure that the material group is valid and active.
  
  
  
  Check Customizing Settings:
  
  In some cases, the error may arise due to missing or incorrect configuration in the customizing settings related to material group hierarchies.
  Verify the hierarchy setup in SPRO under Logistics ? Materials Management ? Material Master ? Material Group ? Define Material Group Hierarchy.
  
  
  
  Reprocess the Transaction:
  
  After assigning the material group to the hierarchy, retry the transaction or process that triggered the error.
  
  
  
  
  Related Information:
  
  Material Group Hierarchy is a structure that groups material groups into a tree-like hierarchy for better management and reporting.
  This error is common in processes that rely on hierarchical classification of materials, such as:
  
  Inventory management
  Warehouse management
  Sales and distribution reporting
  
  
  Proper assignment ensures that materials are correctly categorized and processed according to business rules.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error Message
  WSFP_MESSAGE012: Material group &1 is not assigned to a hierarchy
  
  
  Cause
  Material group used in process but not assigned to any material group hierarchy
  
  
  Solution
  Assign the material group to a material group hierarchy via OMS2 or relevant customizing
  
  
  Transaction
  OMS2 (Define Material Group Hierarchy)
  
  
  Module
  Logistics, Warehouse Management, EWM
  
  
  
  
  If you provide the exact module or transaction where the error occurs, I can give more precise instructions.