How To Fix WSOS001 - Enter a material and a plant

SAP Error Message - Details

• Message type: E = Error

• Message class: WSOS - Retail Supply Source Determination

• Message number: 001

• Message text: Enter a material and a plant

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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 WSOS001 - Enter a material and a plant ?

  SAP Error Message:
  
  WSOS001 - Enter a material and a plant
  
  Cause:
  This error message appears when a transaction or report in SAP requires the user to input both a Material Number and a Plant but one or both of these fields are left empty. The system cannot proceed without these mandatory fields because the material and plant combination is essential for processing inventory, procurement, production, or sales-related data.
  
  When does it occur?
  
  During material master data processing.
  When creating or changing purchase orders, production orders, or sales documents.
  In inventory management or stock overview transactions.
  While running reports or transactions that require material and plant context.
  
  
  Solution:
  
  
  Enter the Material Number:
  
  Provide a valid material number in the material field. Ensure the material exists in the system.
  
  
  Enter the Plant:
  
  Provide the plant code where the material is relevant. The plant must be valid and active in the system.
  
  
  Check Field Input:  
  
  Make sure the fields are not left blank.
  Use the search help (F4) to find valid material and plant codes if unsure.
  
  
  
  Verify Authorizations:
  
  If the fields are filled but the error persists, check if the user has the necessary authorizations to view or process the material and plant data.
  
  
  Check Customizing or Program Logic:
  
  If this error appears in a custom program or report, verify that the input screen or selection criteria enforce the entry of material and plant.
  
  
  
  Additional Information:
  
  
  Message Class: WSOS  
  
  
  Message Number: 001  
  
  
  This is a standard SAP message prompting mandatory input fields.
  
  
  If you are unsure about the valid material or plant codes, you can check:
  
  Material master data via transaction MM03.
  Plant master data via transaction OX10 or SPRO (Enterprise Structure).
  
  
  
  In some cases, the error might be triggered by a user exit or BAdI that requires these fields.
  
  
  
  Summary:
  To resolve WSOS001, always ensure that both Material and Plant fields are filled with valid entries before proceeding with the transaction or report. This is a mandatory requirement for many SAP logistics and inventory-related processes.