CASXO0040S Severe error detected in XAT resource name XA interface. System short on storage. RM interface disabled

A severe error occured interfacing with the XA Resource Manager and the system is short on storage.
System Action:
The XA Resource Manager will not be called for future transactions.
Resolution:
Determine the cause of the failure and re-enable it.
Module:
dfhexa
Destination:
Console.