Error diagnostic messages

When the Filter Management Table routine detects an error it directs the assembler to issue message ASMA940U and the assembly stops. The following text might be included in the ASMA940U message:

SYSADATA exit not coded at same level of interface definition (2) as assembler
The exit uses version 2 of the exit definition, but the assembler uses a different version.
SYSADATA exit called for other than SYSADATA
The exit was invoked with a valid type, but the type is not one that the exit can process. This is probably caused by an incorrect ADEXIT() suboption of the EXIT assembler option.
SYSADATA exit not initialized, and not entered for OPEN
The exit has not yet been initialized, but was not entered with an OPEN request (action=0). There might be a failure in communication between the assembler and the exit.
SYSADATA exit initialized, but was entered for OPEN
The exit has been initialized, but was unexpectedly entered with an OPEN request (action=0). There might be a failure in communication between the assembler and the exit.
SYSADATA exit - Invalid action or operation type requested
An action was requested that is inconsistent with the type of action the exit is able or was expecting to take. There might be a failure in communication between the assembler and the exit.
SYSADATA exit expecting input record, zero buffer length found
The exit was expecting an input record, but the record length was zero. There might be a failure in communication between the assembler and the exit.
Unable to load xxxxxxxx module. SYSADATA exit failed
The assembler was unable to load the Filter Management Table module xxxxxxxx. No SYSADATA processing is possible.
All SYSADATA filter modules failed to open
All the filter modules loaded by the exit failed to open. No SYSADATA processing is possible.