This page presents an official legal definition of “receipt number” from a government source. Additional definitions will be added as jurisdictions publish them.
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The receipt number is a unique 13-character identifier USCIS provides for each application or petition it receives. We use it to identify and track our cases. The receipt number consists of 3 letters, such as EAC, WAC, LIN, SRC, NBC, MSC or IOE, with 10 numbers. You can find it on notices of action USCIS has sent you.
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