How To Fix WSD_MESSAGE128 - Enter a plant

SAP Error Message - Details

• Message type: E = Error

• Message class: WSD_MESSAGE - Message class for WSD

• Message number: 128

• Message text: Enter 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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message WSD_MESSAGE128 - Enter a plant ?

  SAP Error Message:
  
  WSD_MESSAGE128: Enter a plant
  
  Cause:
  This error occurs because the system requires a Plant to be entered in the relevant field, but it has been left blank or not provided. The plant is a mandatory organizational unit in many SAP modules (such as MM, PP, SD) and is essential for processing transactions related to inventory, production, procurement, or sales.
  
  When does it occur?
  
  When creating or processing documents (e.g., purchase orders, production orders, goods movements) where the plant field is mandatory.
  During master data maintenance or transactional data entry where the plant is a required field.
  In custom programs or user exits/enhancements where plant input is expected but missing.
  
  
  Solution:
  
  Enter a valid Plant: Make sure to input a valid plant code in the plant field before saving or proceeding.
  Check field settings: If the plant field is missing or not visible, check the screen layout or field selection to ensure the plant field is available and mandatory.
  Verify master data: Confirm that the plant exists in the system (transaction OX10 to display plants).
  User training: Ensure users understand the importance of entering the plant and know the correct plant codes.
  Check custom code: If this error appears in a custom program, verify that the plant is being passed correctly and is not null or empty.
  
  
  Related Information:
  
  Plant (WERKS): An organizational unit within logistics that subdivides an enterprise according to production, procurement, maintenance, and materials planning.
  Transaction codes to check plants:  
  
  OX10 – Display Plants  
  MM01/MM02 – Material Master (plant-specific data)  
  ME21N – Create Purchase Order (plant is mandatory)  
  
  
  Field name: The plant field is usually represented by the field name WERKS.
  SAP Notes: If the error persists despite entering a plant, check for relevant SAP Notes or patches related to the specific module or transaction.
  
  
  Summary:
  
  Cause: Plant field is empty but required.  
  Solution: Enter a valid plant code in the required field.  
  Check: Plant master data, field visibility, and user input.
  
  
  If you provide the transaction or context where this error occurs, I can give more specific guidance.