Custom Approval Requirement in Middleware - Pre loading of AP Invoices into ERP

Organization Name (Required - If you are an Oracle Partner, please provide the organization you are logging the idea on behalf of):

Dallas County

Description (Required):

We have a requirement of Multi Level Approval mechanism based on some custom rules that is required in the Middleware layer(Customer has OIC as current middleware) prior to loading AP Invoices in ERP Cloud. The approval mechanism should have capability to interact with Database(ATP) to fetch Approver details, custom rules, Stage table Information that is required to provide approval(Invoice Counts, Total Invoice Amounts per load, etc.)

Please let us know if anyone has achieved anything similar to this requirement. Also, please let us know if Process Cloud Service(PCS) has the capabilities to address this requirement based on your prior experiences.