Message SAP WZ004 - Form could not be generated

Diagnosis
There is a problem with the number range object 'FORMABSENC' which isused to generate numbers automatically for forms with the type'notification of absence'. The number range object does not exist orcould not be generated automatically.

System Response
A new number and therefore a new form could not be created.

Procedure
Check whether the number range object 'FORMABSENC' has been definedcorrectly.