[GA4] Import offline events

About offline-event data

You can import offline events from sources that don't have an internet connection or that otherwise cannot support real-time event collection via the SDKs or Measurement Protocol. Once you upload events, they are processed as though they were collected via our SDKs, and use the timestamp you provide or the timestamp of the upload if you don't provide your own.

You can import any event that matches the ones Analytics collects automatically or the ones we recommend for different verticals, or any custom event, parameter, or user property that is properly formed. Learn more

Removing this data requires either a data-deletion request or user deletion.

How offline-event-data import works

To import offline events you create a CSV file that matches the Analytics event schema. See the template examples below.

Create the custom dimensions

If you're importing values for dimensions that don't already exist in Analytics and you want to see that data in reports, then you need to create those dimensions before you upload your data. Learn more

Once you create the custom dimensions, Analytics needs up to 4 hours before it’s ready to recognize the data you import. (You can verify that the custom dimensions are processed by opening an exploration and checking to see if the dimensions are available in the dimension picker.)

Create a CSV file

Create a CSV file of your event data using the template below as a guide.

Upload data

The general upload procedure is outlined in About Data Import.

When you create the data source, select Offline event data.

For offline events, your imported fields get mapped to Analytics fields automatically.

After you upload your data, it can take up to 24 hours for Analytics to make that data available in reports, audiences, and explorations.

Deleting a data source from the data-upload service does not delete uploaded data. If necessary, and as with all other collection methodologies, you may need to follow up with a data deletion request to remove data uploaded via Data Import.

Data-source details

Legend

Scope	Event
Required fields	[one of] client_id or app_instance_id [one of] tag_id or firebase_app_id (tag_id and client_id) or (firebase_app_id and app_instance_id) event_name
Imported data	You may upload any event, parameter, item, or user-property data using the following header formats: timestamp_micros (optional; must be within 72 hours of event; timestamp of upload if not provided) user_id (optional, but recommended when it is available) consent signals (optional, but highly recommended when it is available. Learn more) event_param.<xxxxx> (import any param of any name) user_property.<yyyyy> (import any user property of any name) item<x>.<item_param> (ie: item2.item_name)
Notes	You may not upload or associate personally identifiable information with offline-event import. Learn more

Template

Here is an example CSV template for event data. If you need to create your upload files by hand, use this example as a guide.

measurement_id	client_id	user_id	timestamp_micros	ad_personalization	ad_user_data	event_name	event_param.page_location	event_param.page_referrer	event_param.page_title	event_param.screen_resolution	user_property.color_score	event_param.foo	item1.item_id	item1.item_name	item1.category	item1.item_list_id	item1.item_list_name	item1.index	item1.quantity	item1.price	item2.item_id	item2.item_name	item2.quantity	item2.price	event_param.transaction_id	event_param.value	event_param.tax	event_param.shipping	event_param.currency
G-12345ABCDE	1234567890.0987654321	1000001	1609488000000000	granted	denied	page_view	/home	referrer.com	Home page	1600x900	blue	1-2
G-12345ABCDE	1234567890.0987654321	1000001	1609488060000000	denied	denied	page_view	/video_detail		Video viewer	1600x900	blue	1-4
G-12345ABCDE	1234567890.0987654321	1000001	1609488120000000	denied	granted	video_play	/video_detail		Video viewer	1600x900	blue
G-67890ABCDE	2345678901.9876543210	1000002	1609574400000000	denied	granted	page_view	/home	referrer.com	Home page	2560x1440	green	2-2
G-67890ABCDE	2345678901.9876543210	1000002	1609574460000000	denied	granted	page_view	/product_detail		Product detail	2560x1440	green	2-16
G-67890ABCDE	2345678901.9876543210	1000002	1609574520000000	granted	granted	page_view	/product_detail		Product detail	2560x1440	green
G-67890ABCDE	121212.3434	1000003	1609574520000000	granted	granted	page_view	/camp_lp_1	referrer.com	Summer Sale!	2560x1440	blue	3-1
G-67890ABCDE	121212.3434	1000003	1609660801000000	granted	denied	view_item_list	/camp_lp_1		Summer Sale!	2560x1440	blue		123abc	red_shoe	shoe	list_123	colorful_shoes	1	1		234bcd	blue_shoe	1	30.00
G-67890ABCDE	121212.3434	1000003	1609660860000000	granted	granted	select_item	/camp_lp_1		Summer Sale!	2560x1440	blue		234bcd	blue_shoe	shoe	list_123	colorful_shoes	2	1	30.00
G-67890ABCDE	121212.3434	1000003	1609660870000000	granted	granted	page_view	/product_detail		Product detail	2560x1440	blue	3-5	234bcd	blue_shoe	shoe	list_123	colorful_shoes	2	1	30.00
G-67890ABCDE	121212.3434	1000003	1609660930000000	denied	granted	view_item	/product_detail		Product detail	2560x1440	blue	3-17	234bcd	blue_shoe	shoe	list_123	colorful_shoes	2	1	30.00
G-67890ABCDE	121212.3434	1000003	1609660950000000	denied	denied	add_to_cart	/product_detail		Product detail	2560x1440	blue		234bcd	blue_shoe	shoe	list_123	colorful_shoes	2	1	30.00
G-67890ABCDE	121212.3434	1000003	1609660970000000	granted	denied	begin_checkout	/product_detail		Product detail	2560x1440	blue		234bcd	blue_shoe	shoe	list_123	colorful_shoes	2	1	30.00
G-67890ABCDE	121212.3434	1000003	1609660975000000	granted	denied	page_view	/purchase_confirmation		Congratulations!	2560x1440	blue	3-21	234bcd	blue_shoe	shoe	list_123	colorful_shoes	2	1	30.00
G-67890ABCDE	121212.3434	1000003	1609660980000000	granted	denied	purchase	/purchase_confirmation		Congratulations!	2560x1440	purple	3-21	234bcd	blue_shoe	shoe	list_123	colorful_shoes	2	1	30.00					t12345	37.49	2.50	4.99	USD

Download the CSV import template for offline events

Download the CSV import template for Lead Gen offline events

Limits

Events, parameters, and user properties that use reserved names will be rejected.

Item-event parameters (e.g., item_list_name) without values will be rejected. Item-event parameters are supported for recommended subset of events (e.g., Ecommerce, Jobs, Travel).

Event and parameter names need to observe the following rules:

Events can have a maximum of 25 parameters.
Events can have a maximum of 25 user properties.
User property names must be 24 characters or fewer.
User property values must be 36 characters or fewer.
Event names must be 40 characters or fewer, may only contain alpha-numeric characters and underscores, and must start with an alphabetic character.
Parameter names (including item parameters) must be 40 characters or fewer, may only contain alpha-numeric characters and underscores, and must start with an alphabetic character.
Parameter values (including item parameter values) must be 100 characters or fewer.

Limits of offline event data import

You can create up to 10 data sources for offline event data.

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