“Case Accepted By The USCIS Lockbox”on your I-821 · TPS application or re-registration


The lockbox accepted your paper I-821 and processed payment. Your receipt number comes next. For TPS, the date it was accepted can matter to show you filed within your country's registration period, so keep the receipt.
In general, on any form:
The USCIS Lockbox, the facility that receives mailed filings and payments, accepted your package. Your fee was processed and the case is being entered into the system. A receipt notice usually follows. This is the very first intake step.
The lockbox accepted your paper I-821 and processed payment. Your receipt number comes next. For TPS, the date it was accepted can matter to show you filed within your country's registration period, so keep the receipt.
It is the facility that opens mailed filings, takes payments and sends cases into the system.
No. It only means your package passed the first intake check.
Usually within a few weeks after the Lockbox accepts the case.
AI-assisted explanation based on the official USCIS status, reviewed by CaseAlerta. Not legal advice. Times are typical ranges, never an exact date.