Adding Contract Line(s) to ePro requisition

I have created a Supplier Contract that does not have the "Allow Open Item Reference" checkbox marked and has contract lines totaling the contract's maximum amount. When creating an epro requisition (same supplier ID, contract has not expired, funds are available) the contract does not display. The contract line is not setup as amount only based on this Oracle documentation: "In order for the contract “To be eligible for selection on [the req.], the contract must be in Approved status and cannot be defined as an amount-only contract”, but I still cannot add the contract on the requisition.

Does a contract need to be open item reference in order for it to be used on an ePro requisition?