Amendment process

The amendment process is the formal mechanism by which a solicitation or a signed contract is changed. Before award, amendments arrive as addenda to the tender documents — requirements move, deadlines shift, occasionally the evaluation itself changes — and each becomes part of the contract documents with equal force to the original text. After award, contract amendments adjust scope, price, or term through a documented change order the buyer issues and the supplier accepts.

The discipline differs by phase. During solicitation, the supplier's obligation is tracking: respond to the amended documents, not the superseded ones, and acknowledge each addendum where the instructions require it. During delivery, the supplier's obligation is pricing: an amendment delivered before it is priced is a gift the buyer has no reason to refuse, and repeated unpriced changes are how fixed-price contracts die. In both phases the paper is the protection — the compiled record of amendments, awards, and values is public, and trackers like pubsec.pro surface it, but the internal rule is older than the tools: no change without a change document, no delivery before a price.

@misc{pi-2026-definitions-amendment-process,
  author = {{The Procurement Institution}},
  title  = {Amendment process — definition},
  year   = {2026},
  url    = {https://procurementinstitution.org/definitions/amendment-process},
  note   = {Release 2026.10}
}