Receiving IECTMS3 XXXX,VVVVVV,IS NOT SCRTCH (80)
The volume range vvvvvv-vvvvvv is not defined to your TMSSCRxx and TMONSMxx members. When the tapes are mounted, they are being rejected with the NS 80 because they aren't defined to those two members. Once you define the range using the documentation below, the XXXXXX-XXXXXX range of tapes should be mounted and written to.
See Programming Guide section:
The IECTMS3, IECTMS3E, and IECTMS30 documentation contains the NS80 information in the Message Guide under the section: