operations programmed into a database application which force users to enter an appropriate value for a particular field. Types of validation can include: non-empty field - users cannot leave a particular field empty non-duplicate entry - users cannot insert the same value that exists in another record range - users can only enter values within a specific range fixed list - users can only select a value from a drop-down menu numeric data type - users can only enter a number in a number field fixed length - users cannot enter values longer than that allocated for a field.
A method for ensuring that the contents of a form field are within certain parameters. If a user enters data outside the parameters, a dialog box appears notifying them of the error and what to do to correct it.
To check whether a document is the correct type for a particular EDI system, as agreed upon by the trading partners, in order to determine whether the document is going to or coming from an authorized EDI user.