SAP VERTEX O-Series Integration
We do need tax procedures and pricing procedures for integrating SAP and Vertex.
Tax procedure: We need to create a new tax procedure based on SAP country templates with Vertex tax conditions. Tax procedure assigned to country for output and input tax.


Pricing Procedures: We can defined new or use existing pricing procedure with Vertex defined condition types.

SAP Configuration
Tax interface configuration: 
External tax interface is appended to receive and pass data between VAT O series and SAP
SAP code need to be changed to enable other countries to call the external tax interface.

Change: 
Vertex O series and vertex SAP interface component (SIC) must be installed for the SAP tax interface Remote function call (RFC). Establish the communication through RFC and transactional RFC.

RFC destination:
Program ID links RFC to SIC.