How To Fix MN159 - Order unit missing in billing document item &

MN159 - Overview

• Message type: E = Error

• Message class: MN - Message class for subsequent settlement (Purchasing)

• Message number: 159

• Message text: Order unit missing in billing document item &

What causes this issue?

The system has checked whether a billing document can be created with
respect to the income attributable to the condition record. A
precondition for this is the specification of a sales unit. In the case
of a billing document for end-of-period settlement with respect to
rebate arrangements within the Purchasing area, this is the order unit.
However, the system was unable to determine a valid order unit for the
condition record.
The item number in the billing document is &V1&. Please note that in
the case of a billing document at plant level, only one totals line is
outputted in the settlement reconciliation list under the item number
in accordance with the first plant. You will find the relevant material
in this totals line.

System Response

The settlement accounting for this arrangement is faulty; if you wanted
to carry it out for real (instead of a simulation), no billing document
would be created.

How to fix this error?

Please rectify the source of the error and re-run the settlement
program for the arrangement. If necessary, contact your SAP system
administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MN159 - Order unit missing in billing document item & ?

  The SAP error message MN159, which states "Order unit missing in billing document item &," typically occurs during the billing process when the system expects an order unit for a billing document item but cannot find it. This can happen for various reasons, often related to configuration or data issues in the sales and distribution (SD) module.
  Causes:
  
  Missing Configuration: The order unit may not be defined in the material master or in the sales document.
  Incomplete Data: The billing document item may not have been properly populated with the necessary data from the sales order or delivery.
  Incorrect Item Category: The item category used in the billing document may not be configured to allow for an order unit.
  Customizing Issues: There may be issues with the customizing settings in the SD module that affect how order units are handled.
  
  Solutions:
  
  
  Check Material Master: Ensure that the material master record for the item in question has the