In SAP Fieldglass, the Transaction ID is a unique identifier automatically generated for every single integration event, whether inbound or outbound. This ID serves as the primary key for tracking and troubleshooting specific data exchanges. It allows administrators and support teams to isolate and analyze a particular transaction within the Integration Monitor, distinguishing it from all other integrations, even those triggered by the same initiator or containing similar data. This uniqueness is fundamental for auditing, error resolution, and ensuring data integrity between connected systems.

A. Initiator: The initiator (a user or system) can trigger numerous integrations, so this value is not unique to a single transaction.

C. Server Status: This indicates the general operational state of the server (e.g., 'Success', 'Error') and is not a unique identifier for an individual integration event.

D. Client Message: This refers to the data payload of the integration. While the content may vary, it is not designed as a unique identifier and could be identical across different transactions.

1. SAP Help Portal - SAP Fieldglass: Integration Monitor Guide: The guide details the functionality of the Integration Monitor tool. It explicitly states

"Each transaction is assigned a unique Transaction ID that can be used to track the progress and status of the integration." (Refer to the section on 'Viewing Transaction Details').

2. SAP Help Portal - SAP Fieldglass: Web Services API Guide: In the sections describing API responses and error handling

the documentation consistently refers to the TransactionID as the unique identifier returned by the system for each API call

which is essential for support and debugging. (Refer to the chapter on 'API Responses and Status Codes').