How To Fix TU175 - Main portion &1 is not an MDE portion; allocation is not permitted

TU175 - Overview

• Message type: E = Error

• Message class: TU - Billing/Scheduling/Budget Billing

• Message number: 175

• Message text: Main portion &1 is not an MDE portion; allocation is not permitted

What causes this issue?

PDC meter reading unit &V2& may only be assigned another PDC meter
reading unit as its leading meter reading unit. You cannot assign PDC
meter reading unit &V2& to leading meter reading unit &V1& because &V1&
is not a PDC meter reading unit.

System Response

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

How to fix this error?

Delete the number in field "PDC number" or assign a PDC meter reading
unit as the leading meter reading unit.

Error message extract from SAP system. Copyright SAP SE.

TU175 - Details

• The SAP error message TU175 indicates that there is an issue with the allocation of a main portion in a material document. Specifically, it states that the main portion you are trying to allocate is not recognized as a "MDE portion" (Material Document Entry portion), which means that the system does not allow the allocation to proceed.
  
  Cause:
  
  Incorrect Material Document: The main portion you are trying to allocate may not be correctly defined in the system as a valid MDE portion.
  
  Configuration Issues: There may be configuration issues in the system that prevent the main portion from being recognized as an MDE portion.
  Data Integrity Issues: There could be inconsistencies or errors in the data related to the material document or the portions defined within it.
  Incorrect Transaction: The transaction you are trying to perform may not be appropriate for the type of material or the specific document you are working with.
  
  
  Solution:
  
  Check Material Document: