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of 8821/2848’s›Note:›Entering Form 8802, Application for U.S. Residency Certification

Phase 1 - Inventory Control Process (ICP)

Internal Revenue Manual Part 21. Customer Account Services · 2026-10-03 edition · updated 2026-10-04 · United States

“Phase 1” refers to the Inventory Control Process (ICP). Just like the name sounds, it is the process where we “control” the inventory (the applications) by entering them into the USRC 6166 Database.

Before an application can be controlled, however, it must have already been through all the other stages of Clerical processing: Receiving, Coding, Payment Validation, and Batching.

Accessing the Database:

Start the USRC 6166 Database by double-clicking on the USRC icon on your desktop.

Click the “I Agree” button on the “Authorized Use” pop-up. At this point, there are many functions you can access in the USRC 6166 Database by using the pull-down menus in the top ribbon. For now, though, we are only interested in the menu that lets us enter records for ICP purposes.

Click the “Form 6166” menu and select “Add” in the pull-down.

In the “Add request” dialog box, you are given the option to either “Continue with current batch” if you need to add more records to the last batch you were working on or “Begin with another batch” if you are starting a new batch.

Select the appropriate radio button (usually “Begin with another batch”).

Enter the 6166 Batch number from the Batch Sheet into the entry field.

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▸Contents — Internal Revenue Manual Part 21. Customer Account Services

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