Data Transformation Engine Map Designer Reference Guide

Map Designer Reference Guide
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Chapter 15 - Managing Invalid Data
This chapter explains how to map invalid data. You can map invalid data to an
output, just like any other data. For example, you can place all invalid data in a
separate output for editing or debugging purposes. You can map invalid data to an
error report.
To map invalid data, it must be contained in a valid object. A map does not run
unless all input card objects are valid. For example, if you want to map an invalid
purchase order in a file of many purchase orders, the file itself must be valid.
Using the Restart Attribute
To map invalid data of a particular object, assign the Restart attribute. Errors
must be ignored for invalid data object during validation. You can then map the
invalid data using any or all of the error functions
REJECT, ISERROR, and
CONTAINSERRORS. For a detailed discussion of the Restart attribute, see the Type
Designer Reference Guide.
Using the REJECT Function
To map invalid data, use the REJECT function. The REJECT function is used in
conjunction with the restart attribute. The
REJECT function operates on an invalid
data object contained within a valid object. The output of the
REJECT function is a
series of text items.
The syntax of the
REJECT function is the following:
REJECT (component_with_restart_attribute)
Use the REJECT function with expressions that map valid data. For example, you
can generate an error report that contains the invalid input data, in addition to the
valid company name and date from the input.