Activate SAP Traces and Logging to monitor what happens during data extraction.
What happens while data extraction?
The software uses the Java Connector (JCo) of SAP to connect to the SAP system.
The SAP Java Connector (SAP JCo) is a middleware component that enables the development of SAP-compatible components and applications in Java. SAP JCo supports communication with the SAP Server in both directions: inbound (Java calls ABAP) and outbound calls (ABAP calls Java). SAP JCo can be implemented with Desktop applications and with Web server applications. -- SAP Help
Note: zap Audit and zap Cash are not shipped as a Java application! You do not need Java to run it!
JCo uses the SAP program RFC (Remote Function Call) to extract data from the SAP system to your local zap Audit instance. For this, you need an SAP User with sufficient privileges. These are only READ permissions. You can monitor all activities of SAP Users via the SAP transaction 'STAD'.
Use transaction 'SM19' to configure SAP user traces. For this consult your SAP admin or the SAP Help Portal.
In the end, a copy of the extract is created
After the data extraction is successfully finished. A backup of the data is created and packed into a zip file. You can find this "raw" data in the project folder in the installation directory or in your workspace. You can use these files to repeat data processing, without a new extraction.
Select this raw data zip file as "External data source" while project creation.