See here for instructions on how to turn a parameter into a custom dimension

Parameter Name Custom Dimension? Description

store_name

Yes Dealership name (ex. toyotademo)

user_type

Yes Is the user an online shopper or client staff

oem_code

Yes The number assigned by the manufacturer to the dealer (ex. 406A08)

user_id

Yes Unique ID assigned to an identified customer or agent (ex. 39021033)

affiliation

Yes Name of company associated with event (liveperson)
affiliation_id   ID number of agent, employee, company, phone extension, or session connected with the event (332093jda-2389dajewd-32893dsa)
comm_phone_number   phone number associated with event (E.164 phone number formatting)
comm_status Yes start, close, engage, inject, send_deal, send_payment, send_appt, directions, idle, timeout, load, video_start, video_end, connect, ring, appt_set, crm_update, appt_booked, blocked, failed, connected
comm_type Yes chat, sms, voice, video, form, email
currency Yes USD,CAD,EUR,GBP,FRF
department Yes sales, service, parts, trade, credit, body_shop, admin, accessories, hr, custom_shop, rentals, unknown, quick_lube
element_position   top, top_left, top_right, bottom, bottom_right, bottom_left, slide_left, slide_right, floating, pop-up
element_state   active, cleared
element_subtype   cta_button, cta_icon, nav_button, nav_icon, nav_tab, hamburger_menu, mega_menu, sidebar_menu, inline_menu, hyperlink, content, share_icon, image, input_field, toggle, dropdown,
element_text Yes Text on the cta button, hyperlink, menu, or message on image (if available)
element_text_selection    
element_title   Name of the data field or adjacent text
element_type Yes header, banner, popup, form, digital_retailing_tool, trade_tool, chat_tool, accessibility_tool, search_tool, scheduling_tool, gallery, map, footer, video, item_details
element_value Yes value of itemlist filter, search terms, and universal field values
event_action Yes click, slide, open, close, exit, increase, decrease, clear, check, uncheck, redirect
event_action_result Yes play, restart, vr_play, spin, popup, slideout, exit, error, search, calc, start, stop, redirect, open, close, increase, decrease, clear, check, uncheck, next_step
event_owner Yes The name of the company who sends the events into GA4 (ie. cdk_digital_retail)
flow_name Yes start, contact_info, trade, financing, accessories, pick_bank, finalize_deal, credit_app, soft_pull, compare, upload_photos, upload_video, lease, delivery, service_plans, conditional_incentives
flow_outcome Yes start, stop, close, recalc, download, submit, unlock, proceed, lead, approved, declined, error, added, removed
flow_stage Yes a numeric value associated with the flow_name data field
form_name Yes Name of the form provided by the form owner
form_type Yes item, consumer_contact, trade, recall, parts, accessories, service_appointment, pre-order, finance_credit, human_resources, body_shop, custom, research, surveys, unknown
item_color Yes pull from standardized 3rd party lookup table
item_condition Yes new, used, salvage, dealer_cpo, oem_cpo, cpo, unknown
item_fuel_type Yes gas, diesel, liquified_natural_gas, electric, propane, nitrogen, methane, unknown
item_id Yes vehicle identification number, serial number, which is assigned by manufacturer
item_inventory_date   Date the vehicle was added to the inventory
item_make Yes ford, toyota, honda, etc.
item_model Yes crv, tacoma, rav4, etc.
item_payment Yes lease, finance, cash
item_price Yes price of item (used for eCommerce reports)
item_results   number of results returned on the screen from a search query
item_type Yes sedan, coupe, suv, cuv, crossover, truck, commercial_truck, van, trailer, 5th_wheel, luxury, domestic,
item_variant Yes xle, sle, mdx, etc.
item_year Yes model year
itemlist_filter   max_mileage, min_mileage, max_price, min_price, min_year, max_year, min_payment, max_payment
link_url   destination URL if the CTA takes the consumer to a new page
media_type Yes video, image, vr, slider, gallery, offer, 360_platform
page_type Yes item, itemlist, contact, directions, service, parts, accessories, body_shop, home, build_to_order, custom, complaint, employment, recall, finance, credit, trade, commercial, showroom