How can I find the party details from an Expense 'payment request' invoice?

Summary:

We are looking to utilize the Payment Request FBDI to submit invoices to off-set with incorrect credits that were created from the Expense module. We cannot cancel the expense invoices/credits from the Payables module. How do I find the necessary party details (Party Original System Reference and Location Original System Reference) for an employee expense invoice so that I can create another invoice to the same party and location using the Payment Request FBDI?

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