How To Fix WP421 - Parameters for plant & / transaction type & / item & missing

SAP Error Message - Details

• Message type: E = Error

• Message class: WP - Messages from POS interface

• Message number: 421

• Message text: Parameters for plant & / transaction type & / item & missing

What causes this issue?

Transaction type for accounting is not maintained for the POS
interface.
(Plant &V1&, transaction &V2&, item &V3&)

System Response

The data cannot be updated.

How to fix this error?

<DS:SIMG.W_DF_VK_0137.SIMG_OPOS>Define the transaction type</> and
<DS:SIMG.W_DF_VK_0191.SIMG_OPOS>maintain the parameters</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WP421 - Parameters for plant & / transaction type & / item & missing ?

  The SAP error message:
  WP421: Parameters for plant & / transaction type & / item & missing
  
  Cause:
  This error occurs when the system cannot find the necessary configuration parameters for the specified combination of:
  
  Plant
  Movement type (transaction type)
  Item category
  
  in the Inventory Management (IM) or Warehouse Management (WM) configuration.
  In other words, the system expects certain settings (like movement type parameters, item category settings, or plant-specific settings) to be maintained for the given transaction, but these are missing or incomplete.
  
  Where does this happen?
  
  During goods movements (goods receipt, goods issue, transfer postings) in Inventory Management.
  When processing material documents involving specific plants, movement types, and item categories.
  In Warehouse Management transactions linked to IM.
  
  
  Detailed Explanation:
  SAP uses a combination of plant, movement type, and item category to determine how to process a goods movement. These parameters control:
  
  How stock is updated
  Which accounts are posted to
  Whether batch management is required
  Whether special stock indicators apply
  How WM is integrated
  
  If the system cannot find the relevant configuration for this combination, it throws the WP421 error.
  
  Solution:
  
  
  Check Movement Type Configuration:
  
  Go to SPRO ? Materials Management ? Inventory Management and Physical Inventory ? Movement Types ? Define Movement Types.
  Verify that the movement type used in the transaction is correctly configured for the plant and item category.
  
  
  
  Maintain Movement Type Parameters:
  
  In SPRO, check the parameters for the movement type for the specific plant.
  Ensure that the movement type is assigned to the plant and that all required parameters are maintained.
  
  
  
  Check Item Category Settings:
  
  Verify that the item category used in the transaction is valid for the movement type and plant.
  Check if the item category is properly configured in the system.
  
  
  
  Maintain Plant-Specific Settings:
  
  Sometimes, plant-specific settings for movement types or item categories are missing.
  Ensure that the plant is correctly assigned in the configuration for the movement type.
  
  
  
  Check Customizing for WM Integration (if applicable):
  
  If Warehouse Management is active, check the integration settings between IM and WM.
  Ensure that the movement type and plant combination is maintained in WM customizing.
  
  
  
  Use Transaction OMJJ:
  
  Use transaction OMJJ to check and maintain movement type parameters.
  Verify if the movement type is assigned to the plant and item category.
  
  
  
  Check for User Exits or Enhancements:
  
  Sometimes custom code or user exits might expect certain parameters.
  Review any custom developments that might influence movement type processing.
  
  
  
  
  Additional Notes:
  
  This error is common when a new plant or movement type is introduced but the configuration is incomplete.
  It can also occur if the item category is custom or non-standard and not properly linked.
  Always test the movement type in a test environment after configuration changes.
  
  
  Summary:
  
  
  
  Aspect
  Description
  
  
  
  
  Cause
  Missing configuration for plant/movement type/item category combination.
  
  
  Solution
  Maintain movement type parameters for the plant and item category in SPRO or OMJJ.
  
  
  Transaction to check
  OMJJ (Movement Type Parameters), SPRO (Customizing)
  
  
  Related areas
  Inventory Management, Warehouse Management, Movement Types, Item Categories
  
  
  
  
  If you provide the exact plant, movement type, and item category involved, I can help you with more specific steps.