QB Issue Resolution:

The only version of desktop that tracks vendor insurance is the contractor version of premier and enterprise.

Check 2016, is it a contractor version?  If not then either work with the vendor you purchased 2016 from and get the correct version for what you need, or put the information in the vendor notes area

Resolution for Issue 'We had 2015 with vendors insurance information. We updated to 2016. Where can we find the entry for our information now.' available: Yes (Solved).
Source: Intuit Community forum.

We had 2015 with vendors insurance information. We updated to 2016. Where can we find the entry for our information now.: 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.

Support for contractor version
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Error Recovery for contractor version [Canada]
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