How To Fix M8421 - Order price quantity cannot be determined automatically

M8421 - Overview

• Message type: E = Error

• Message class: M8 - Invoice Verification/Valuation

• Message number: 421

• Message text: Order price quantity cannot be determined automatically

What causes this issue?

Due to differences between the PO price quantity and the PO quantity in
previously posted goods receipts and invoices, the corresponding PO
price quantity &V4& &V3& for the quantity to be entered would lead to
the PO history becoming inconsistent. This is because the one unit of
measure contains an invoice surplus, and in other contains a delivery
surplus. This is not permitted.

System Response

The system does not propose a new PO price quantity.

How to fix this error?

You must change the PO price quantity.

The PO price quantity must be at least &V2& &V3&.

The PO price quantity must be at most &V2& &V3&.

Check the PO history also. It might be the case that an incorrect PO
price quantity was entered during goods receipt or invoice receipt.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M8421 - Order price quantity cannot be determined automatically ?

  The SAP error message M8421, "Order price quantity cannot be determined automatically," typically occurs in the context of materials management and procurement processes. This error indicates that the system is unable to automatically determine the price or quantity for a specific order, which can happen for several reasons.
  Causes:
  
  
  Missing Pricing Conditions: The pricing conditions for the material or vendor may not be maintained in the system. This can include missing info records, conditions in the pricing procedure, or missing purchase order conditions.
  
  
  Incorrect Material Master Data: The material master data may not be set up correctly, which can lead to issues in determining the price or quantity.
  
  
  Incomplete Purchase Info Records: If the purchase info record for the vendor and material combination is incomplete or missing, the system may not be able to determine the price.
  
  
  Pricing Procedure Issues: The pricing procedure assigned to the document type may not be configured correctly, or the