CASXO0019S Switch Load Module for resource XAT resource name failed to load RM XA resources, returned pointer was null

The Switch Load Module for the XAT resource failed to load the necessary DLLs or .so programs. The returned pointer was null.
Restriction: This topic applies only when the Enterprise Server feature is enabled.
System Action:
The region will not start.
Resolution:
Check that the programs loaded by the Switch Load Module are on the path or libpath or in $TXDIR\lib.
Module:
dfhexa
Destination:
Console and standard error.