What dimensions combinations are allowed in Google Analytics API?

Question

I set up my own customVarValue1 dimension in GA (which basically corresponds to a unique session), and am trying to generate reports via the API per this variable.

It works when my dimensions are ga:customVarValue1,ga:channelGrouping, but doesn't work when they are ga:customVarValue1,ga:productSku or ga:customVarValue1,ga:userAgeBracket (I get empty results).

What combinations of dimensions are allowed, and how can I get the ones that are not to work?

Answer 1

You are getting empty results because there is no data.

productSku is part of ecommerce which means it has hit type of transaction or item. Most people when they add a custom var only add it for hit type pageview so unless you are 100% sure that you are also sending the custom dimension with your ecommerce hits then there wont be any data for a customdimension and a ecommerce value.

userAgeBracket is tricky its one of the demographic and interest reports dimensions there may not be any relation between that and a custom dimension either. But I think there should be.

You might want to try testing thought he query Explorer