A few points to remember

The following are some noteworthy points regarding Process Builder:

1. A Process's API name must be less than, or equal to, 77 characters, and it's always associated with a single object.
2. Using Process Builder, you can't delete records. If you want to do that, you have to use Flow with Process Builder.
3. To set Text data field to blank, you can use {!$GlobalConstant.EmptyString}.
4. The Process owner will receive an e-mail from Salesforce. If the Process failed at runtime or if any fault occurs, the error or warning messages might refer to a Flow instead of a Process.
5. The process follows all the governor limits that apply to Apex.
6. You can have a maximum of 50 active rules and processes on any object. Rules include Workflow Rules, Escalation Rules, Assignment Rules, and Auto-assignment Rules.
7. Process actions are executed in the same order in which they appear in the Process Builder...