TIBCO Cloud™ Integration could connect to services running on-premise in your network via the TIBCO Hybrid Agent. With the Hybrid Agent, your Apps in TIBCO Cloud™ Integration could access the on-premise services without opening ports on the public internet. This article describes how to setup the TIBCO Cloud™ - Hybrid Agent to connect to the local SAP server.
 

TCI

step 1:
create an agent for the hybrid connection:
tibagent configure agent <agent name>

step 2:
create a profile for your access key via below command:
tibagent configure connect -s <your accesskey secret> -a <accesskey Name> <agent name>

step 3:
connect the proxy to your target services via connect comnmand:
tibagent start agent --spec <listening port>:<on-premise app host>:<on-premise app port> <agent name>

Note:
The on-premise host URL must be the same as specified in the Apps. 
Each -s specify a container port that needs to map to the on-premise service. We can have multiple specs within one agent.
The region default to US instance. For other regions, please refer to proxy agent user document: Hybrid Proxy Connections

How to connect to on-premise SAP server on TCI via tibagent

https://integration.cloud.tibco.com/docs/index.html#tci/using/hybrid-agent/hybrid-proxy/index.html