EQA9968E Invalid Exit Type ...

Explanation
z/OS® Debugger
CICS® exit activation transaction DTCX is unable to determine
a valid exit type to start or stop.

Programmer response
Verify that DTCX is issued with an exit type of X=all exits or F=XPCFTCH exit or E=E=XEIIN or
A=XPCTA or H=XPCHAIR. Note there is no blank space between DTCX and this parameter (for example:
DTCXXO = turn all exits ON and DTCXXF = turn all exits OFF).