How To Fix VO026 - Problem in number assignment

VO026 - Overview

• Message type: E = Error

• Message class: VO - W&S: Rough workload forecast + picking wave

• Message number: 026

• Message text: Problem in number assignment

What causes this issue?

Here you are dealing with the number range object &V1&, the number range
interval &V2&, and the cause of the error &V3&.
The error causes have the following meanings:

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

1 = Number range interval for object not defined
2 = Number range not internal
3 = Number range object not defined
6 = Number range interval used up, re-use not possible
7 = Non-foreseen error
8 = Non-foreseen error

System Response

The picking wave cannot be created.

How to fix this error?

In cases 1 through 6, the respective Customizing entries should be
corrected. Inform the person responsible for Customizing settings or
your system administrator.
In cases 7 - 8, this is probably an error in an ABAP/4 program. Contact
your system administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message VO026 - Problem in number assignment ?

  SAP Error Message:
  VO026 - Problem in number assignment
  
  
  Cause:
  The error message VO026 typically occurs during the creation or processing of sales documents (such as sales orders, deliveries, billing documents) when there is an issue with the automatic number assignment. This means that the system is unable to assign a unique document number because:
  
  The number range interval for the document type is not properly defined or has been exhausted.
  The number range object is not assigned to the sales document type.
  The number range interval is not active or incorrectly maintained.
  There is a mismatch or inconsistency in the number range configuration.
  The number range buffer is full or corrupted.
  
  
  
  Solution:
  To resolve the VO026 - Problem in number assignment error, follow these steps:
  
  
  Check Number Range Intervals:
  
  Go to transaction VOV8 (for sales document types) or SNRO (Number Range Objects).
  Identify the number range object related to the document type (e.g., VBAK for sales orders).
  Verify that the number range intervals