TRANSFER Programming Manual

Error Reporting
Developing TRANSFER Applications
40970 Tandem Computers Incorporated 8–15
Fields with the PIC X characteristic, such as the ITEM-ID or SESSION-ID fields, are not
displayable as output to terminal sessions.
Test your application module by module. If your application is based upon the
requester-server model, you can test your servers alone before evaluating their
interaction with SCREEN COBOL requesters. Later, you can evaluate your requesters
with debugged servers.
When your application is running, you should validate its fault-tolerant operation and
reliance upon TMF. For example, you could schedule a recovery drill where operators
use TMF to recover from various kinds of failures.