The single most common cause of schedule slippage on donor-funded packages is not the procurement itself — it is discovering the no-objection requirement after the step it applies to.
Every development partner sets thresholds above which its prior review applies. Below the threshold, the procuring entity proceeds and the funder reviews after the fact. Above it, specific steps cannot proceed without a written no-objection.
Map the review points onto the procurement schedule before the plan is approved, not after the tender is issued. For a prior-review package that typically means: the procurement plan itself, the bidding document before issue, the evaluation report before award, and any subsequent contract amendment.
Build the funder's turnaround time into the schedule as a real duration. Treating it as zero is what turns a compliant procurement into a late one.