The selection list for the System ID field, which appears when defining a project connection, is populated from the system definitions created in the Basic Data section of the SAP Ariba Cloud Integration Gateway (CIG) portal. Before a project can be created, an administrator must first navigate to the "Basic Data" area to define the backend ERP systems (like SAP S/4HANA or SAP ERP). This involves specifying the unique System ID, client, and other parameters. CIG then uses this repository of defined systems to populate the dropdown menu during project creation, ensuring data consistency and validity.

A. SAP System ID: This describes the type of identifier being used, not the specific location within the CIG application where the list of these identifiers is configured and sourced from.

B. Resources section of CIG: This section provides access to documentation, guides, and support materials; it does not store any transactional or configuration data for system connections.

C. My Configurations section of section of CIG: The project itself is created within this section, but this area consumes the System ID list. The source where the list is originally defined is the "Basic Data" section.

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1. SAP Help Portal: SAP Ariba Cloud Integration Gateway configuration guide.

In the chapter "Setting up SAP Ariba Cloud Integration Gateway

" the procedure explicitly states that the first configuration step is to define systems. The section "Defining systems" details the process: "You must define the SAP Ariba and the ERP systems that you want to connect... You must define the systems before you can create a project." This confirms that the "Basic Data" section is the source for system information used later in project creation.

2. SAP Learning Hub: Course AR822 - SAP Ariba Cloud Integration Gateway - Administration and Configuration.

Unit 2

"Cloud Integration Gateway Configuration

" outlines the setup process. The lesson on "Basic Data Configuration" covers the prerequisite step of defining ERP and Ariba systems. Subsequent lessons on "Project Configuration" (under "My Configurations") show how these pre-defined systems are then selected from a list to create a new integration project.