How To Fix M8668 - Invoice reduction upper limit is less than positive small difference

SAP Error Message - Details

• Message type: E = Error

• Message class: M8 - Invoice Verification/Valuation

• Message number: 668

• Message text: Invoice reduction upper limit is less than positive small difference

What causes this issue?

You have entered an invoice reduction upper limit &V1& that is less
than the positive small difference &V2&.

System Response

With this setting, the invoice reduction upper limit has no meaning and
is therefore ignored. Such a setting does not make sense.

How to fix this error?

Please correct your entries.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M8668 - Invoice reduction upper limit is less than positive small difference ?

  The SAP error message M8668, "Invoice reduction upper limit is less than positive small difference," typically occurs in the context of invoice verification and processing in the Materials Management (MM) module. This error indicates that the system has detected a discrepancy between the invoice amount and the purchase order amount that exceeds the allowable limits set in the system.
  Cause:
  
  Invoice Amount Discrepancy: The invoice amount submitted for payment is higher than the purchase order amount, and the difference exceeds the defined tolerance limits.
  Tolerance Limits: SAP has predefined tolerance limits for invoice verification, which can be configured in the system. If the difference between the invoice and the purchase order exceeds these limits, the error will be triggered.
  Configuration Settings: The settings for tolerance limits may not be appropriately configured for the specific vendor or purchasing organization.
  
  Solution:
  
  Review the Invoice and Purchase Order: Check the invoice details and compare them with the corresponding purchase order. Ensure that the amounts match and that there are no discrepancies.
  Adjust Tolerance Limits: If the discrepancy is valid and should be accepted, consider adjusting the tolerance limits in the configuration settings. This can be done by:
  
  Navigating to the configuration settings in SAP (Transaction Code: SPRO).
  Going to Materials Management > Purchasing > Invoice Verification > Define Tolerances for Invoice Verification.
  Adjusting the settings for the relevant purchasing organization or vendor.
  
  
  Manual Adjustment: If the invoice is correct and the discrepancy is minor, you may need to manually adjust the invoice or the purchase order to align the amounts.
  Consult with Finance: If the issue persists, consult with your finance or accounting department to ensure that the invoice processing aligns with company policies and procedures.
  
  Related Information:
  
  Tolerance Groups: Tolerance groups can be defined for different vendors or purchasing organizations, allowing for flexibility in handling discrepancies.
  Invoice Verification Process: Understanding the invoice verification process in SAP can help in troubleshooting similar issues in the future.
  SAP Notes: Check for any relevant SAP Notes or documentation that may provide additional insights or updates related to this error message.
  
  By following these steps, you should be able to resolve the M8668 error and ensure smooth invoice processing in SAP.