How many Custom Answering Rules we can add to IVR Settings by api?

We are developing integration for the Ringcentral and CRM system . In which we plan to add a smart call forwarding. To do this, we need to use methods such as Create Company Call Handling Rule [Beta]. To dynamically change and add rules. How many Custom Answering Rules we can add to IVR Settings by api? Are there any limits for adding rules?