Need ContentItem HDL assistance to add/update "Verification Done by Third Party" field

Summary:

We were tracking our Vendor Managed Licenses and Certifications using the Short Description field in Profiles > Item Catalog > Licenses and Certifications screen via HDL or manually updating.

The short description field is now gone, so we need to update the Verification Done by Third Party field to be "yes" if it is a vendor managed item.

This impacts multiple processes including pay if we are unable to make this adjustment and we have over 2000 Licenses and Certifications so manually updating is not recommended.

We are unable to identify what the attribute name is for the ContentItem.csv HDL to update the "Verification Done by Third Party" field.