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.