Does PrimusGFS Cover USDA GAP Certification?

I work in a greenhouse growing and selling food crops.  A customer is asking for GAP certification (no other specifics given from them).  We are PrimusGFS certified.  Does our PrimusGFS certificate cover GAP? We are certified to the Indoor Agriculture module and the Harvest Crew module, both of which PrimusGFS refers to as being GAP.  I understand USDA GAP+ is a separate audit and certificate, but is PrimusGFS generally considered to "supersede" or include the requirements of USDA GAP+?  Do customers tend to require both?

Your PrimusGFS certificate is a GAP certification. Sound like they just want confirmation you are food safety certified, so they should have no problem accepting your Primus certificate and/or inspection report.