QB Issue Resolution:

open the products and services list and edit each item, there is no bulk edit for this

see the pic for how to set up an inventory item in QBO

QBO-new-inv-screen.jpg

Resolution for Issue 'How to edit inventory accounts after the entry has already taken place?' available: Yes (Solved).
Source: Intuit Community forum.

How to edit inventory accounts after the entry has already taken place?: 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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