10000867 
Message
To generate this document, first define the numbering series in the Administration module
Diagnosis
In the second step of the Document Generation Wizard (where you select the target document type and related characteristics), you have cleared the Series field and have chosen the Next button.
Procedure
Note
Ask your superuser to follow the steps below.
End of the note.
From the SAP Business One Main Menu, choose
Administration 
System Initialization Document Numbering Document Numbering - Setup
and double-click a document type row.In the Series <XXX> - Setup window, define a default series, and if needed, select additional series for the chosen document type.