SIMS Pay BACS Reference Posted on September 23, 2020September 23, 2020 by Dom Beardsell The BACS reference should be the full budget code without spaces – example. G120G12341234 being made up of [Phase]G[School Number][Item Code]. How useful was this article? Click on a star to rate it! Submit Rating Average rating / 5. Vote count: No votes so far! Be the first to rate this post. Posted in SIMS.net and tagged BACS, BACS reference, SIMS pay, SIMS pay BACS reference.