14

I didn't find this in the documentation - is there some limit on the number of custom parameter a custom event might have?

The documentation does mention a limit of 25 user custom parameters, but what about event custom parameters - is there a similar limit?

arikfr
  • 3,311
  • 1
  • 25
  • 28
  • 2
    It's worth noting that for reporting (at least in free plan) you can only specify up to 10 text parameters and 40 numeric parameters per app (at the same time). https://support.google.com/firebase/answer/7397304?hl=en – Mark Sep 28 '17 at 02:33

4 Answers4

36

I collect the information based on all the official documentation, hope you helps

Custom Events and Parameters Limitations

  • 23 Automatic Registered Events - Source
  • 500 Custom Events - Source and Source
  • Up to 25 custom parameters per event - Source
  • Up to 50 custom event parameters per project - Source
  • From the 50 custom parameters only 40 must be numeric (Long, Double) and 10 textual (String) values - Source
  • Parameter names can be up to 40 characters long alfanumeric with underscores - Source
  • Parameter textual values can be up to 100 characters long - Source
  • Up to 30 events per project as conversions - Source
  • 5
    Note: If you add the same custom parameter in 3 different events, it will be counted as 3 out of your 50 quota. – Prasad Pawar Jul 31 '19 at 09:52
  • Martin Daniel - for predefined parameter value character count is 100 or 10 – Venka Tesh user5397700 Aug 26 '19 at 05:32
  • @VenkaTeshuser5397700 the limit is 50 custom events which only could be 40 numeric values (Long, Double) and 10 alphanumeric (Strings with 100 characters long) –  Aug 27 '19 at 15:38
  • Thanks martin Daniel. i have faced some issue in fire base analytics predefined value can you please help me details in https://stackoverflow.com/questions/57660104/android-firebase-analytics-predefined-and-custom-parameters-not-working – Venka Tesh user5397700 Aug 28 '19 at 05:05
  • I just answer your question @VenkaTeshuser5397700 –  Aug 28 '19 at 16:52
  • @PrasadPawar as of 2021, from the [documantation:: Deprecation of custom parameter reporting](https://support.google.com/firebase/answer/10075209?hl=en&visit_id=637582506532733686-2178476032&rd=1) I think the count will still be 1 out of 50... quoting, "With event-scoped custom dimensions and metrics, parameters are identified for property-wide dimensions and metrics, allowing you to create a single dimension or metric based on a parameter and report on it for as many events as you wish." – iamcastelli Jun 02 '21 at 17:58
5

Both event and user parameters are limited to 25.

LogEvent method docs: https://firebase.google.com/docs/reference/android/com/google/firebase/analytics/FirebaseAnalytics#public-method-summary

Yapaxi
  • 332
  • 5
  • 10
4

Custom-parameter reporting limits (2020)

You can identify up to 100 custom event parameters per project (50 numeric and 50 text) to include in reporting by registering those parameters with their corresponding events.

The ability to create up to 100 parameters is available with App + Web properties. If you're using Google Analytics for Firebase, you need to upgrade to an App + Web property.

If you are not using an App + Web property, then you can identify up to 50 parameters per project (40 numeric and 10 text).

More details : https://support.google.com/firebase/answer/7397304

aaltintop
  • 188
  • 9
1

Custom-parameter reporting limits (2019)

Firebase lets you specify up to 25 custom parameters per event (Android or iOS).

You can also identify up to 50 custom event parameters per project (40 numeric and 10 textual) to include in reporting by registering those parameters with their corresponding events. Once you register your custom parameters, Firebase displays a corresponding data card in each related event-detail report.

Each parameter that you specify counts toward the project limit of 50. For example, if you specify the same parameter for 3 different events, then that counts as 3 of your 50.

Source: https://support.google.com/firebase/answer/7397304

Community
  • 1
  • 1
Sagar
  • 3,107
  • 2
  • 26
  • 35
  • 1
    Don't miss the last point of the answer. As mentioned, even if you specify the same parameter for multiple events, all those same-named parameters would be considered different and each of those would count against your limit of 50. – Sagar Jun 05 '19 at 12:23
  • from the [documantation:: Deprecation of custom parameter reporting](https://support.google.com/firebase/answer/10075209?hl=en&visit_id=637582506532733686-2178476032&rd=1) I think the count will still be 1 out of 50... quoting, "With event-scoped custom dimensions and metrics, parameters are identified for property-wide dimensions and metrics, allowing you to create a single dimension or metric based on a parameter and report on it for as many events as you wish." – iamcastelli Jun 02 '21 at 17:49