QB Issue Resolution:

no there is no way to change the column titles from sales description to anything else

What really matters is the description and item name.  If you wanted to you could use a category called NOT FOR SALE and make the items subs under that category (or if you do not have the most recent update adding categories, use a dummy item and make other actual items sub items.

Resolution for Issue 'For products and service list I have items that are not resold, but i still need to see their descriptions is there a way to change the column “sales description”?' available: Yes (Solved).
Source: Intuit Community forum.

For products and service list I have items that are not resold, but i still need to see their descriptions is there a way to change the column “sales description”?: 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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