There are several reasons why QuickBooks errors 6189 and 816 occurs

Several factors can cause Quickbooks error 6189 and 816  Some of these include:

  1. Reports based on transaction log files conflict with those based on enterprise reports
  2. An update was not performed
  3. User-friendly mode
  4. Incorrect data storage

It does not appear that the transaction log file matches the enterprise report

Essentially, a log file is a mechanical record of every transaction carried out by an organization. The document is saved as a [company file name]. Qbw.Tlg file. If you open this document, it cannot be converted into an administrative record (QBW) for your company. As such, the QBW report does not correspond to the related "TLG record, QuickBooks error -6189,-816.