開発者環境は新規作成できそう 2023/06以降
Try using the developer orgs. You can create a new PB
Starting in Summer ’23, we’re blocking the creation of processes. You can still activate, deactivate, and edit any existing processes. To test and create processes for use in managed packages, developer orgs still allow you to create processes. For new automations, use flows.
https://help.salesforce.com/s/articleView?id=sf.process_overview.htm&type=5
Execute a process builder only for update action
修正の時だけ、処理する方法