IBM will drop support on following after z/os 2.3:
The allocating, obtaining, or changing common areas of virtual storage, such that the storage is in user key (8-15), will not be supported after z/OS V2R3.
Will CA Workload Automation ESP Edition be affected by the dropping support of allocating, obtaining, or changing common areas of virtual storage, such that the storage is in user key (8-15)?
No. ESP shouldn't be affected.