Generally, a size protest must be filed within five business days of when the protester receives notice of the identity of the awardee. But there are some nuances to this rule, such as whether a corrective action will extend the deadline and whether the clock starts running upon notice of the prospective awardee or the actual contract award date (Hint: notice of awardee).
But when does the 5-day protest period start to run in the context of a Blanket Purchase Agreement issued under a GSA Schedule contract? A recent SBA Office of Hearings and Appeals decision is a reminder that the award of a BPA does not trigger a new 5-day period to file a size protest.