User Input Error Checking

When users type data and press the [ENTER] key, errors are sometimes detected by the terminal. IBM display stations and HP terminals process errors differently. The following list summarizes these differences:

HP terminals perform input-data error checking after the user presses the [ENTER] key or a valid function (AID) key.
If multiple input errors are detected in more than one field, Pass Thru reports one error at a time starting with the first occurrence.
Error messages are displayed at the bottom of the screen.
The cursor is positioned at the beginning of the erroneous field.
The erroneous field is redisplayed with the user's input data.

User Input Error Checking

Technical documentation

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