How To Fix MEPO105 - An error occured when numbering the items

MEPO105 - Overview

• Message type: E = Error

• Message class: MEPO - New Purchase Order Dialog

• Message number: 105

• Message text: An error occured when numbering the items

What causes this issue?

When numbering the items, the item number &V1& was assigned more than
once. This will cause errors.
The purchase order processing is canceled.

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

System Response

How to fix this error?

This error can be caused by the following situation:
You create a purchase order using BAPI_PO_CREATE1 or ME21N.
The items transferred are numbered in the first steps, or you have set
an item interval of 1 for the used document type in Customizing
(transaction OMEC).
During processing, one of the items is exploded into a main item with
subitems, whereby the subitems receive item numbers that have already
been assigned.
SAP recommends numbering the items in bundles of ten, or setting the
item interval to 10 in Customizing.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

MEPO105 - Details

• The SAP error message MEPO105, which states "An error occurred when numbering the items," typically occurs in the context of creating or processing purchase orders or contracts in the SAP system. This error can arise due to various reasons, and here are some common causes, potential solutions, and related information:
  Causes:
  
  Number Range Issues: The number range for the document type you are trying to create may not be properly defined or may be exhausted.
  Authorization Issues: The user may not have the necessary authorizations to create or modify the document.
  Configuration Errors: There may be configuration issues in the document type settings or number range settings in the SAP system.
  System Errors: Temporary system issues or inconsistencies in the database can also lead to this error.
  
  Solutions:
  
  
  Check Number Ranges:
  
  Go to transaction code SNRO (Number Range Objects) and check the number range for the relevant document type (e.g., purchase order, contract).
  Ensure that the number range is