How come there is data missing on our reports?

Each store informs us different reports at different times. As a company we work with retailers to send us all the information within the deadlines. But each store is an independent company and we regret to report that they are not perfect, make mistakes (not frequent) but it is our duty to warn you that sometimes happen, our close relationship with the stores is focused on these bugs can happen and resolved as quickly as possible, but still no data in the report is that the store did not provide information which is sure to be delivered until the next quarter.