SAP FI skills, CC and CI integration, FICA, BRIM Convergent Invoicing, SAP BRIM functionalities, Scheduling Billing and Invoicing, Invoicing process Execution Process configuration, AP AR and Dunning Processes, Billing process configuration, SOM CC, CI-Billable items management, Invoice outputs from CI, Customization of events in CI and FICA, SAP CI Convergent Invoice, Billing reversal, Contract accounts FICA