How To Fix VL879 - # messages due to blocked materials regarding # materials concerned

SAP Error Message - Details

• Message type: E = Error

• Message class: VL -

• Message number: 879

• Message text: # messages due to blocked materials regarding # materials concerned

Message 'Material is blocked'
The system issues this message during collective delivery processing if
a material cannot be blocked during the creation of a delivery (SAP
block / enqueue).

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

Reason
Another user or the same user who works in two sessions carries out a
business transaction (order, another collective delivery run) and blocks
this material, too.
Alternative
If parallel business transactions are also collective runs and if the
system issues this error message frequently (e.g. material M1 is in
every delivery), you cannot use parallel processing.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message VL879 - # messages due to blocked materials regarding # materials concerned ?

  The SAP error message VL879 typically indicates that there are issues related to blocked materials during the delivery process. This message is often encountered in the context of logistics and inventory management, particularly when trying to create or process deliveries in the SAP system.
  Cause:
  The error message VL879 is triggered when you attempt to process a delivery that includes materials that are currently blocked. Blocked materials can arise due to various reasons, including:
  
  Quality Inspection: Materials may be blocked due to pending quality inspections.
  Stock Block: Materials may be blocked for stock reasons, such as being reserved for a specific purpose or due to inventory discrepancies.
  Blocked Stock: The stock may be marked as blocked in the system, preventing any movement or delivery.
  Material Status: The material may have a status that restricts its use in deliveries (e.g., blocked for sales).
  
  Solution:
  To resolve the VL879 error, you can take the following steps:
  
  
  Check Material Status: Review the status of the materials involved in the delivery. You can do this by navigating to the material master record and checking for any restrictions or blocks.
  
  
  Quality Inspection: If the materials are blocked due to quality inspection, ensure that the inspection is completed and the materials are released for use.
  
  
  Unblock Stock: If the stock is blocked, you may need to change the stock status. This can be done through transaction codes like MB1B (Transfer Posting) or using the appropriate movement types to unblock the stock.
  
  
  Review Reservations: Check if there are any reservations against the materials that might be causing the block. You can use transaction code MB23 to view reservations.
  
  
  Consult with Inventory Management: If you are unsure about the reason for the block, consult with your inventory management or warehouse team to understand the specific reasons for the block and how to resolve it.
  
  
  Use Transaction Codes: Utilize transaction codes such as MB52 (List of Warehouse Stocks on Hand) or MMBE (Stock Overview) to get a detailed view of the stock status.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MB1A (Goods Withdrawal), MB1B (Transfer Posting), and MB1C (Other Goods Receipts) for managing stock.
  Material Master: Understanding the material master data and its settings can help in identifying issues related to blocked materials.
  User Roles: Ensure that you have the necessary authorizations to make changes to material statuses or stock levels.
  Documentation: Refer to SAP documentation or your organization's internal guidelines for handling blocked materials and deliveries.
  
  By following these steps, you should be able to identify the cause of the VL879 error and take appropriate actions to resolve it.