Each Electronic Filing Identification Number (EFIN) is assigned a Vendor Control Number (VCN). Both the EFIN and VCN are entered when configuring office groups in Office Manager.

• For more information about what a VCN is, see our article on what is a Vendor Control Number (VCN).

To enter the VCN in Office Manager, your firm must first do the following:

1. Obtain the tracking number that is associated with your EFIN from IRS e-Services.
2. Enter the EFIN and tracking number in EFIN Manager. Allow approximately 48 hours for the IRS to validate the EFIN, after which, a VCN is assigned.
3. Obtain the VCN from EFIN Manager.
4. Enter the VCN in the applicable office group.

1. Open Office Manager.
2. Click Configure Applications.
3. Select Tax Preparation and click Configure.
4. Select the appropriate office group and click OK (if applicable).
5. Select Electronic Filing Options and click Setup.
   • On the General tab, confirm that the EFIN that has been entered for this office group is the EFIN that the VCN was assigned to.
   • In Vendor control number, enter the 12-digit VCN number.
   • Warning! The EFIN and VCN must both be entered in the same location (both in the office group or both in the return). If one is entered in the office group and one in the return, disqualifying diagnostics may be issued in Tax Preparation.
6. Click OK. 
7. Close Office Manager.

For more information about configuring Office Manager for electronic filing, see our article on configuring electronic filing for CCH® ProSystem fx® Tax