Many import commands can result in a failure condition. This means that the template
cannot complete the execution of a command in a meaningful fashion.
For example, if the template executes the command find
BEGIN and the data file does not contain the string
"BEGIN", a failure condition results. Execution of the program
(whether in the header, record, or request blocks) will terminate. If the error occurs
while Import is reading data from a file, an error message is displayed. If the error
occurs in the header block, Import assumes that the template failed to handle the file
format and tries the next available template in the list (repeating this process until
all available templates have been tried).