Request Concept 

To make it easier to process and report on data, the system synchronizes InfoPackage requests (PSA request), data transfer process requests (DTP request) and activation requests in the standard DataStore object and these requests remain open across several load processes.

Requests are opened and closed as follows:

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       1.      When a daemon is started, it opens a PSA request in the first load process.

       2.      The system opens a DTP request and activation request when the PSA request contains data.

       3.      The daemon uses the threshold values defined in the InfoPackage to determine when to close a request. The data transfer process copies these settings from the InfoPackage.

When a PSA request is closed, the related DTP and activation requests in the same load process are closed too.

       4.      When the requests are closed, new requests are opened automatically the next time the daemon accesses data and the data transfer for real-time data acquisition continues with these new requests.

       5.      Again, the system only opens a DTP request and activation request when the PSA request contains data.

       6.      If you are transferring data from an SAP source system, data is automatically deleted from the delta queue when the new PSA request is opened.

The data (and the open requests) are available for analysis and reporting as soon as they have been successfully updated and activated in the DataStore object. You can only update data from the DataStore object to a further InfoProvider (an InfoCube, for example), if the DTP (and activation) request is closed.

In some cases it is useful to close requests before the threshold value is reached. For more information, refer to the following sections:

Closing Requests Using Process Chains

Closing Requests in the Monitor for Real-Time Data Acquisition