Data Transformation Engine Map Designer Reference Guide

Chapter 17 - Debugging a Map Existence of Data
Map Designer Reference Guide
262
Finding the Important Messages
The best way to read the trace file is open it in a word processor and use the
search facilities. The following table explains the trace options to choose and what
to look for in the trace file, based on the run-time message.
If You Get this
Run-time Message Limit Trace To Read This in the Trace File
One or more inputs
was invalid.
The summary Read the card summaries to
find out which card is invalid.
The invalid card
Start searching from the
bottom, and look for the word
invalid in the trace file.
Input valid, but
unknown data found.
The summary Read the card summaries to
find out which card contains
the unknown data.
The card containing
the unknown data
Start searching from the
bottom, and look for the word
invalid in the trace file.
Existence of Data
When a certain data object is validated, determining the existence of that object
occurs before fully validating all of the components within that object.
For example, if a data object is a partition and includes an initiator, as soon as the
initiator is found, it is known that the data object exists. A message exists in the
trace file, indicating that the data object is known to exist.
The existence of a certain object can be determined if that object has certain
properties. For a detailed explanation of how the existence of an object is
detected, see the Type Designer Reference Guide.
Example of Existence of Record Objects
The following example shows how the existence of record objects can be
determined. An input file is composed of records with three kinds of
records: A, B, and C.