SAP Message AO526 - Appropriation request number &1 is too long (max. 12 characters)

Diagnosis
You are trying to enter an appropriation request number that containsmore than 12 characters. The appropriation request type stipulatesexternal number assignment using a number range. The numbers in thenumber range, however, have a maximum of 12 characters.

System Response
The appropriation request is not created.

Procedure
Assign a valid number.