QB Issue Resolution:

If you are going to use a desk top version, the easiest solution will depend upon the volume of test transactions you entered. Your options are:

1) restore a backup copy of the file made after your initial set-up, prior to test entries

2) you can go back and individually delete all of your test transactions

3) create a new QuickBooks file:

export all relevant lists from the old QuickBooks file (COA, Items, Customers, Vendors & etc)
then import the lists from the prior file into your new QB file

If you are going to use QB Online, I believe your only option then is to individually delete all transactions.

Resolution for Issue 'I entered hundreds of test sales orders, created invoices and made inventory purchases to fill the orders in preparation to utilize QB and obtain reports.' available: Yes (Solved).
Source: Intuit Community forum.

I entered hundreds of test sales orders, created invoices and made inventory purchases to fill the orders in preparation to utilize QB and obtain reports.: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

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