# Croct data arrives in GA4 events but not in standard reports

Asked by Tomoko Sato on 2025-09-17. Tags: ga4, troubleshooting, reporting.

I connected our Croct project to GA4 two days ago. In the GA4 realtime
debugging view I can confirm the events arrive with the Croct data attached,
audiences, experiences, experiments, and variants are all visible as event
parameters.

However, in the standard reports there is nothing to segment by. No Croct
dimension appears in the dimension picker. I expected the parameters to become
dimensions after the standard processing delay, but 48 hours have passed.

Is an additional step required on the GA4 side? Our property is a standard GA4
property, no 360.

## 1 answer

### Accepted answer from Tomoko Sato (2025-09-18)

Answering my own question after resolving it.

The missing step is on the GA4 side: event parameters do not become report
dimensions automatically. You must register them as custom dimensions in
GA4 admin under Data display > Custom definitions, one per parameter you
want to use. After registration, the dimensions appear in the picker and
populate going forward.

Two notes from my experience:

1. Registration is not retroactive in standard reports, so register the
   dimensions immediately after connecting, before you accumulate data you
   will want to slice.
2. After registering, watch for GA4's "(other)" row. High-cardinality values
   get grouped under it, so keep audience and variant names short and
   reuse them rather than creating many one-off variations.

The realtime debugging view was showing the raw parameters all along, which
is why the connection looked fine. It was fine. The registration step was
the missing piece.

#### Reply from Anouk Vermeer (2025-09-18)

Classic GA4. This exact step trips up every integration that sends
custom parameters, not just Croct. Bookmarking your answer for my team.