Requisition Web Client vendor lookup

Hi

All my users that have access only with the web client to create a requisition have a problem when they try to find a vendor. They can access the search but when they try to select a criteria to search by, it tells them they don't have the security privileges

Looking with the dexsql, it seems to be the vendor_lookup or ASI_Explorer_Fields but I can't find them in the security tasks.

Anyone know how to fix this ?

Thanks