Solution : https://service.sap.com/sap/support/notes/53832 (SAP Service marketplace login required)
Key words :
spr textsvbeln sd document numbertestflag test runfirst run, additional key words cancellation, respective cancellation document, cancelled billing document, long runtimes occur, create program zztool01, matchcode 'billing documents, run suceessfully, billing document, billing documents
Related Notes :
69880 | Runtime error TIME_OUT when you cancel |
65987 | Performance problems when cancelling with VF11 |