[FATAL]
The application tried to emit a message which was not defined. This is a internal error which should not occur. Please report any occurrences to your support.
Try to find out the and avoid the reason for the unknown message.
When you are generating an absolute file, your application should be encoded in a single source file, and should only contain absolute symbol. So in order to avoid this message, define all your section as absolute section and remove all XREF directives from your source file.
ORG $1000
Data1: DS.W 1
ORG $800
entry:
NOP
NOP
addData1: DC.W Data1