The Office of Sponsored Programs requires proof of selection from the Office of Research and Economic Development (ORED) before final approval of a limited submission proposal can be given.
Several requests for proposals from federal agencies and private foundations limit the number of proposals that an institution can submit. There are also cases of multi-institutional proposals where only a limited number of proposals can be submitted with LSU as the lead institution. ORED has set internal deadlines for several of the Limited Submissions RFP's which can be found on their webpage: https://www.lsu.edu/research/funding/external/limited_submissions.php.
It is important that PI's consult the above link for the internal deadlines and abide by them. This will facilitate ORED to set up internal review panels and select the proposal that can go forward. It is also likely that ORED is not aware of some of the other Limited Submission RFP's, in which case, the PI should bring that to ORED's attention as soon as possible, so that they can conduct the proper internal competition and select the proposal that can go forward.