Which IIQ version are you inquiring about?
Version 8.4
Share all details related to your problem, including any error messages you may have received.
In IIQ 8.4 version - Oracle ERP Siebel connector guide
The Supported Managed Systems
SailPoint’s Oracle ERP – Siebel connector supports the following versions of Siebel’s CRM Managed System:
Siebel CRM version 17.0.0.0 (IP 2017) along with patches 18.X, 19.X, 20.X, 21.X, and 22.X
Siebel CRM version 16.0.0.0 (IP 2016)
Siebel 24.5 version will support to IIQ 8.4 version ??