How To Fix W#420 - Control parameters for requirements planning for plant &1 not found

W#420 - Overview

• Message type: E = Error

• Message class: W# -

• Message number: 420

• Message text: Control parameters for requirements planning for plant &1 not found

Self-Explanatory Message

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message W#420 - Control parameters for requirements planning for plant &1 not found ?

  The SAP error message W#420 indicates that the control parameters for requirements planning for a specific plant (denoted by &1) are not found. This typically occurs in the context of Material Requirements Planning (MRP) when the system is unable to locate the necessary configuration settings for the specified plant.
  
  Cause:
  
  Missing Configuration: The most common cause is that the MRP parameters for the specified plant have not been set up in the system.
  Incorrect Plant Code: The plant code provided may be incorrect or does not exist in the system.
  Data Inconsistency: There may be inconsistencies or issues in the master data related to the plant or materials.
  Authorization Issues: The user may not have the necessary authorizations to access the MRP parameters for the specified plant.
  
  
  Solution:
  
  
  Check MRP Configuration:
  
  Go to the transaction code SPRO to access the SAP Reference IMG.
  Navigate to Logistics > Production > Material Requirements Planning > Master Data > Define MRP Parameters.
  Ensure