Our trial by fire/baptism into IMS continues.

As previously documented with our questions, we have struggled to get IMS up and running.   We have managed to get a control region up and running along with other required address spaces.

I have been able to figure out how to start a dependent region.

I have registered a transaction and the program that goes along with it.  As it is a 3270 screen, I have compiled the MFS source successfully, and I believe I have defined the PSB and PCB.
When I query IMS, I can see the tran and the program/application listed.
We have the program load library in the concat sequence of IMS.

When I try and invoke the tran  using the trancode when logged into IMS, I get one of two messages
Our Tran Code is 4 characters.  

When I type just the 4 characters to invoke the tran, I get the following message:
FS064 08:23:44 DESTINATION CAN NOT BE FOUND OR CREATED, DEST=z7wg

When searching the internet, someone having similar issues posted that there was to be a space on the end so instead of typing z7wg , the instructions said to use z7wg_   where _ is a space.
When we add the space onto the end, and hit enter, we receive the following message: 
DFS2469W 13:59:50 TRANSACTION REJECTED ; RACF NOT ACTIVE 0012

So, assuming that the second message is the correct issue we are trying to work on now, when I go look up that message I see that documentation for DFS2469W states
RACF NOT ACTIVE; RC=12 RACF is not active, and RACF transaction or command class is active.

So. Is this the result of something being configured incorrectly with IMS setup, is it a problem with how the APPLCTN and TRANSACT macros were executed to have it think RACF is involved somehow, or is it something completely different that we have not quite found the "magic" documentation for.

Any thoughts or direction would be greatly appreciated.

Cheers!
Darcy Elliott