QB Issue Resolution:

The option to delete those classes is unavailable, ykjoseph.

 

To reduce the usage of your classes, you’ll have to make it as inactive.

 

Here’s how to do it:

  1. Click the Gear icon, then select All Lists.
  2. Select Classes.
  3. Click the drop-down arrow on the class you wish to inactive.
  4. Select Make inactive.

To check if you’ve successfully reduce the usage:

  1. Go to the Gear icon.
  2. Click Account and Settings.
  3. Select the Usage tab.
  4. Scroll down to Classes and locations.
  5. Then, Done.

Resolution for Issue 'URGENT: To reduce usage of classes' available: Yes (Solved).
Source: Intuit Community forum.

URGENT: To reduce usage of classes: 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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