Microsoft Invest - Universal pixel object limits

There are limits for how many audiences, conversions, custom events, and parameters you can create, as well as a data size limit for information transmitted by the parameters.

Audiences 1000
Conversions 1000
Custom Events 100
Custom Parameters 100
URL length 2000 characters
Items passed in an array per single parameter 200 items
Single parameter value 100 characters
Total number of parameters 100 parameters

Note

If your application ID is longer than 200 characters, the request will be processed, but the ID will be truncated. Only the last 200 characters will be kept.