How To Fix WRF_AT108 - Quantity of a DC delivery phase was to be < 0; it will be set to 0

SAP Error Message - Details

• Message type: E = Error

• Message class: WRF_AT - Messages for Allocation Table RTFASH

• Message number: 108

• Message text: Quantity of a DC delivery phase was to be < 0; it will be set to 0

What causes this issue?

You want the quantity of the delivery phases of the distribution center
&V2& in the allocation table &V1& to be less than zero (&V4&) in
synchronisation with the purchase order &V3&. However, this is not
permitted.

System Response

The quantity of the delivery phases of the distribution center &V2& in
the allocation table was set to zero in the synchronisation. The system
was unable to fully synchronize the quantity change in the purchase
order in the allocation table.

How to fix this error?

Check allocation table &V1& and adjust the quantities manually
(transaction WA02) so that the allocation table is full.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WRF_AT108 - Quantity of a DC delivery phase was to be < 0; it will be set to 0 ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WRF_AT108 Quantity of a DC delivery phase was to be < 0; it will be set to 0
  
  Cause:
  This warning message occurs during the processing of a Delivery Creation (DC) or during the delivery phase determination in SAP's Sales and Distribution (SD) or Warehouse Management (WM) modules. The system detects that the quantity calculated for a delivery phase (e.g., picking, packing, or shipping phase) is less than zero, which is logically incorrect because quantities cannot be negative.
  This situation can arise due to:
  
  Incorrect or inconsistent data in the delivery or sales order.
  Over-delivery or returns processing where the system tries to adjust quantities.
  Custom enhancements or user exits that manipulate delivery quantities incorrectly.
  Issues in the determination of delivery phases or splitting of quantities across phases.
  Stock inconsistencies or incorrect reservation/deallocation in the warehouse.
  
  
  What the message means:
  SAP automatically corrects the negative quantity by setting it to zero to avoid further errors in processing. This is a warning rather than a hard error, so the process continues, but it indicates that something in the quantity calculation logic is off.
  
  Solution / How to resolve:
  
  
  Check the Sales Order and Delivery Data:
  
  Verify the quantities in the sales order and delivery documents.
  Look for any inconsistencies such as over-delivery, returns, or cancellations that might cause negative quantities.
  
  
  
  Review Custom Code:
  
  If there are user exits, BADIs, or enhancements related to delivery quantity calculation or delivery phase determination, review them for logic errors that might cause negative quantities.
  
  
  
  Check Delivery Phase Determination:
  
  Review the configuration for delivery phases in transaction SPRO under Logistics Execution ? Shipping ? Deliveries ? Define Delivery Types and Phases.
  Ensure that the phases and their quantity calculations are correctly set up.
  
  
  
  Stock and Reservation Check:
  
  Verify stock levels and reservations in the warehouse.
  Run stock consistency checks if necessary.
  Check if any goods movements or cancellations have caused negative stock or quantity adjustments.
  
  
  
  Debugging:
  
  If the cause is not obvious, debug the delivery creation or update process to see where the negative quantity is being calculated.
  Pay attention to the function modules or methods involved in delivery phase quantity calculation.
  
  
  
  SAP Notes:
  
  Search for relevant SAP Notes using the message number or text for any known bugs or patches.
  Example search terms: "WRF_AT108", "quantity delivery phase negative", "delivery phase quantity set to zero".
  
  
  
  
  Related Information:
  
  Message Class: WRF_AT (related to delivery processing)
  Module: Logistics Execution (LE), Sales and Distribution (SD)
  Transaction Codes: VL01N (Create Delivery), VL02N (Change Delivery), VL10* (Delivery Processing)
  SAP Tables: LIKP (Delivery Header), LIPS (Delivery Items), VEKP/VEPO (Handling Units), and related delivery phase tables.
  Common SAP Notes: Check SAP Support Portal for notes related to delivery phase quantity issues.
  
  
  Summary:
  The message indicates that SAP detected a negative quantity for a delivery phase and automatically corrected it to zero. While the system continues processing, you should investigate the root cause to prevent incorrect quantity calculations, which may affect inventory, billing, or shipping processes.
  
  If you provide more context (e.g., transaction, process step, customizations), I can help you with more specific troubleshooting steps.