They don't want to provide sap router string because of sequrity reason.is there any other way to connect?like mendix they don't need sap router string.

https://docs.mendix.com/partners/sap/use-sap-odata-connector

I see. That Mendix documentation is for OData services, which is a different type of SAP integration than what is created through OutSystems Service Studio (which are for SAP Remote Functions). If your customer prefers to integrate through OData services there are a few resources in OutSystems that may help:

1. Integration with SAP OData services can be achieved by creating a REST service in Service Studio. There's an article here on how to do it with a sample specification.
2. There is also a feature - Integration builder - that's currently available only as part of an Early Access Program that automates this process. If you find that your customer might need it, consider signing up for the Early Access Program here.

Just one question with help of below details is it possible to connect SAP System

System ID:       

Server:            

Port:               

Server URL 

 User: 

Password

Yes, for an OData service you only need the Server URL, Username, and Password.

How to do that do u have any example or document

Here you can find all the steps and related documentation:

https://success.outsystems.com/Documentation/How-to_Guides/Integrations/How_to_consume_an_SAP_OData_service_in_OutSystems

Hope this helps you!