100% reporting or the contract is not met. If you got one thing wrong on the report, then how can they trust that you did not make more errors? It calls the entire report into question.
This MSC also has very quick reporting requirements and if the data is stale by more than 8 hours, they don't want the data even if you correct it.
Live and learn. Don't put wrong receipt or time down as they are very picky about timing. If the register is off and you put that you arrived at 12:00 PM and the register says you ordered at 11:59 AM, you better explain this in the report, or adjust your reported start time by 60 seconds to stop the reporting system from kicking up an automatic rejection flag.
There are rejection reasons that don't even take human intervention. You need to be very careful to get this right.