I have a question regarding the Prime's delay in submitting a subcontractor's invoices to a vendor for payment. My business provided work for a Prime contractor. They are now rejecting invoices that are over 1 year old, even though we submitted these invoices in a timely fashion. Is there any requirement for a Prime to submit all invoices for service provided within a certain time frame? Or can a Prime hold onto a subcontractor's invoices, without submitting them to the state, for an indefinite period of time? TIA