PO_DOCUMENT_CONTROL_PUB- PO Cancellation Logs

Hello,

I am executing PO_DOCUMENT_CONTROL_PUB.CONTROL_DOCUMENT for cancellation of purchase orders; while executing, the below  log is generated although PO was cancelled successfully.

What exactly is the below? Appreciate any insight or help. is this anything to do with communication or print? I have tried p_print_flag to Y and N but of no use.

AAD Package XLA_00201_AAD_S_000007_BC_PKG is valid. Ledger Category is PRIMARY.27-MAY-2020 13:30:57 - executing extract hookevent key = 149305extract hook executed successfullyThe following are the invalid accounting errors===============================================  - executing postprocessing hookevent key = 149305 - postprocessing hook executed successfully - Calling sequencing get_sequence_number - Returned from sequencing get_sequence_number