Enabling Multiple Branches 
Caution
Enabling the multiple branches feature is irreversible. After activation, you can manage transactions only on a branch level.
To ensure your add-ons work properly with multiple branches, you should run a test and, if necessary, modify the add-ons before you enable the multiple branches feature for production use.
Prerequisites
In the Document Settings window, on the General tab, you have selected the Manage Inventory by Warehouse checkbox.
In the Company Details window, on the Basic Initialization tab, you have done one of the following:
Selected the Use Perpetual Inventory and Manage Item Cost per Warehouse checkboxes.
Deselected the Use Perpetual Inventory checkbox.
NoteIf the settings of some items contradict the configurations described above, you need to change the item settings first. For more information, see SAP Note 1691012.
End of the note.
If the company is of the Korea localization, the company is created on release 9.1 or higher, and has no existing transactions.
Procedure
From the SAP Business One Main Menu, choose
Administration 
System Initialization Company Details 
.On the Basic Initialization tab of the Company Details window, select the Enable Multiple Branches checkbox.
Choose the Update pushbutton.
A system message appears, asking for confirmation to activate multiple branches. Choose the Yes button to proceed.
A second system message appears, asking you whether or not to copy existing company information (company name and address) to the default main branch that will be created after multiple branches are activated. Choose either of the following options to proceed:
Yes: Company information, as well as existing transactions, will be assigned to the default main branch.
No: The company name, as well as existing transactions, will be assigned to the default main branch.
For any localization that is not Brazil, if there is any existing transaction, a Branch Registration Number window appears. Enter a unique registration number provided by the government for the branch, or enter an internal number to identify the branch.
CautionYou cannot change the registration number for the default main branch after activating multiple branches because transactions exist with the branch. Therefore, ensure that you enter the correct or appropriate registration number in this step.
End of the caution.
Result
A default main branch is created with the following data assigned to it:
Existing transactions, whether open or closed
Business partners
Warehouses
Existing branches of users and employees are automatically copied to the Branches - Setup window as disabled branches.
CautionIf you enable the multiple branches feature for a new company, do not confuse the default main branch with the existing system branch named Main. By default, the default main branch uses the company name and is enabled.
End of the caution.The Users - Setup window no longer contains the Branch field. Instead, you need to assign users to at least one branch. For more information, see Assigning Users to Branches.
The Branch dropdown list in the Employee Master Data window contains the branches in the Branches — Setup window, but no longer has the Define New option.