Microsoft Curate - 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.
Object limits
| Audiences | 1000 |
| Conversions | 1000 |
| Custom Events | 100 |
| Custom Parameters | 100 |
Request limits
| 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.