In the first phase, LOAD checks whether the syntax of the statement is correct and whether the table and column names are compatible with the database catalog.
For DATAEXTRACT with explicit column definitions, an additional test is made to determine whether the output fields for numerical columns are wide enough and the length of the output row complies with limitations such as the screen window size.
If an error is detected, LOAD displays and highlights the relevant line on the screen, positions the cursor on the error, and outputs a system message.
Example:
LOAD returns here to the Input mode. The incorrect statement can be corrected by the user and restarted.
If the HELP function is called in this situation, the system branches at once to the description of the incorrect statement (see chapter The HELP Function).