How To Fix W_DFE018 - No MRP types exist for material requirements planning procedure &1

SAP Error Message - Details

• Message type: E = Error

• Message class: W_DFE - Messages for Function Group WDFE

• Message number: 018

• Message text: No MRP types exist for material requirements planning procedure &1

What causes this issue?

No MRP types are maintained for MRP procedure &1 in Customizing (table
T438A).

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

In Customizing for the MRP procedure, maintain at least one MRP type.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message W_DFE018 - No MRP types exist for material requirements planning procedure &1 ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  W_DFE018 No MRP types exist for material requirements planning procedure &1
  
  Meaning / Cause:
  This warning message indicates that the Material Requirements Planning (MRP) procedure specified in the material master or in the MRP configuration does not have any MRP types assigned to it. In other words, the system is trying to execute MRP for a material or plant, but it cannot find any MRP types linked to the MRP procedure number referenced by &1.
  
  MRP Procedure: A grouping or categorization of MRP types that define how materials are planned.
  MRP Type: Defines the planning strategy for a material (e.g., PD for MRP, VB for manual reorder point planning, etc.).
  
  If no MRP types are assigned to the MRP procedure, the system cannot determine how to plan the material requirements.
  
  When does this occur?
  
  During MRP run or simulation.
  When checking or maintaining material master data.
  When customizing or configuring MRP procedures and types.
  
  
  Cause Details:
  
  The MRP procedure number (e.g., 01, 02, etc.) assigned to the material or plant does not have any MRP types linked in the customizing.
  Possibly a configuration gap or missing assignment in transaction OPPR (Define MRP Procedures) or related customizing.
  Could also be due to incorrect or incomplete master data setup.
  
  
  Solution / How to fix:
  
  
  Check MRP Procedure Configuration:
  
  Go to transaction OPPR (or SPRO path:
  
  Logistics ? Production ? Material Requirements Planning ? MRP ? Define MRP Procedures).
  Select the MRP procedure number referenced in the error message.
  Verify if any MRP types are assigned to this procedure.
  If none exist, assign the relevant MRP types to this procedure.
  
  
  
  Assign MRP Types to MRP Procedure:
  
  In the customizing screen, assign the MRP types that should be valid for this MRP procedure.
  Save the configuration.
  
  
  
  Check Material Master:
  
  Verify the MRP procedure assigned to the material (in MRP1 or MRP2 view).
  Ensure it matches the configured MRP procedure with assigned MRP types.
  
  
  
  Check Plant Parameters:
  
  Sometimes plant-specific settings affect MRP procedures.
  Use transaction OPPR or OMI4 to check plant-specific MRP settings.
  
  
  
  Run MRP again:
  
  After correcting the configuration, rerun MRP to confirm the warning no longer appears.
  
  
  
  
  Additional Information:
  
  MRP Procedure is a grouping mechanism that allows you to control which MRP types are valid for a material or plant.
  This message is a warning (W_), so MRP may still run but with limited or no planning for the affected materials.
  Proper configuration ensures that the system knows how to plan materials based on their MRP type and procedure.
  Refer to SAP documentation on MRP customizing for detailed steps.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error Message
  W_DFE018 No MRP types exist for MRP procedure &1
  
  
  Cause
  No MRP types assigned to the MRP procedure number used
  
  
  Solution
  Assign MRP types to the MRP procedure in customizing (OPPR)
  
  
  Check
  Material master MRP procedure, plant settings
  
  
  Effect
  MRP cannot plan materials correctly without MRP types
  
  
  
  
  If you need, I can also provide step-by-step screenshots or transaction codes for the configuration. Let me know!