Can we exclude non-project labor costs from creating accounting entries in Labor Distribution?

Summary:

We’re implementing Labor Distribution in Oracle Projects to automate labor cost allocations for certain projects and streamline the recording of reimbursable labor entries. Labor Distribution would apply to roughly 5% of our total payroll costs. While most reimbursable employees can be allocated at 100%, some are only partially reimbursable, so we need to allocate less than the full payroll cost to the project. We do not use Projects billing.

Because payroll already creates the full accounting (debit expense, credit payable), we only want Projects to account for the project-related portion—not the non-project remainder. However, the current setup appears to require SLA rules for all labor, even when a portion is unrelated to Projects.