**Describe the bug** ibm-ibm_zos_core-1.12.0 is not working with V3R12 version of Python **To Reproduce** Steps to reproduce the behavior: 1. Get latest zos core collection 2. Have V3R12 installed on the target environment 3. Run basic operations like iplinfo command 4. You will see failures **Expected behavior** As per the software matrix, the latest collection requires V3R11 or later. While the R11 worked, R12 did not