Important Information for Proposers

A revised version of the NSF Proposal & Award Policies & Procedures Guide (PAPPG) (NSF 22-1), is effective for proposals submitted, or due, on or after October 4, 2021. Please be advised that, depending on the specified due date, the guidelines contained in NSF 22-1 may apply to proposals submitted in response to this funding opportunity.

Unique Entity ID Required for Proposal Submission

July 29, 2022

On April 4, 2022, the unique entity identifier used across the federal government changed from the DUNS Number to the Unique Entity ID (UEI), generated by An active SAM registration is required to submit a proposal to NSF. If the SAM registration is not complete before the proposal due date, the proposer will have to wait and submit their proposal for the next solicitation due date after SAM registration is complete. Organizations are experiencing delayed registrations, validations and UEI issuance. Please start processes early to allow for additional time. Visit for the latest status and additional guidance.