Which of the following documents should be used FIRST when addressing a vendor that is not complying with the project deliverables?

A Service Level Agreement explicitly defines the performance expectations, deliverables, timelines, and remedies agreed upon between the project and the vendor. When non-compliance occurs, the SLA is the authoritative document to reference because it establishes exactly what the vendor is contractually obligated to provide. Initiating any vendor dispute or corrective action begins with confirming the terms of the SLA to demonstrate the specific areas of non-compliance.

The project charter establishes project authorization and high-level goals but does not contain vendor-specific obligations or enforceable delivery terms.

The risk register tracks identified risks and planned responses but is not a contractual document and does not define vendor commitments or remedies.

The RFP is used during the procurement solicitation phase to invite vendor proposals and is not an enforcement instrument once a contract and SLA are in place.