Assigning Numbering Series to Branches 
Procedure
Note
As long as one numbering series is assigned to a branch, all other numbering series must also be assigned to branches. If you do not assign numbering series to branches, the numbering series are available for all branches.
From the SAP Business One Main Menu, do either of the following:
If your company does not permit more than one document type per numbering series, choose
Administration 
System Initialization Document Numbering 
, and then in the Document Numbering - Setup window, double-click a document type.If your company permits more than one document type per numbering series, choose
Administration System Initialization Document Numbering Numbering Series .
In the Series - <Document> - Setup or Numbering Series - Setup window, from the Branch dropdown list of a numbering series, select a branch.
NoteFor companies that use Folio numbers, you can define Folio numbering series for each document numbering series. These Folio numbering series are in turn assigned to the branch to which the document numbering series is assigned.
End of the note.Choose the Update and OK pushbuttons, and return to the Document Numbering - Setup window.
Choose the Update pushbutton.
Result
You can add transactions for a branch only when the selected numbering series is assigned to the branch or is available for all branches.