z/OS compatibility

A customer wants to upgrade the operating system to z/OS 2.4. They are currently running the following SoftwareAG software,
ADABAS + SQL V8.3.3
Natural + Security+VSAM V8.2.5
PAC V2.6.1
Predict 8.3.2

What are the required versions of the above software that is compatible with z/OS 2.4?

You can look this up on Empower > Products & Documentation > Product Versions

Product Family | Product - Product Version
? Operating System and Hardware * Version Lifecycle Milestone
GA OS Retirement EOM EOSS
Product Family: Adabas | Adabas [ADA] 8.4.2
? z/OS 2.3 - IBM 2017-10-31 - 2021-04-30 -
Product Family: Adabas | Adabas [ADA] 8.4.1
? z/OS 2.3 - IBM 2017-10-31 - 2019-12-31 -
Product Family: Adabas | Adabas [ADA] 8.3.4
? z/OS 2.3 - IBM 2017-10-31 - 2020-04-30 -

Since z/OS 2.4 is not yet listed, I’d recommend opening a Support Request ticket to find out when it will be supported.