Static IP and Dynamic IP and Port (DIPP) are two features that implement one-to-one translation of a source IP address while allowing the source port to change. Static IP translates a single source address to a specific public address, and allows the source port to change dynamically1. Dynamic IP and Port (DIPP) translates the source IP address or range to a single IP address, and uses the source port to differentiate between multiple source IPs that share the same translated address2. Both of these features provide a one-to-one translation of IP addresses, but do not restrict the source port. Reference:
Static IP - Palo Alto Networks
Dynamic IP and Port - Palo Alto Networks