Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

■ The OPEN statement in ISAM uses a user-defined type as the
  table type under the following rules:
 
  • The names of the fields must be less than or equal to
    30 characters long.
 
  • You cannot have an element of type SINGLE.
 
■ Possible solution:
 
  • Verify that your OPEN statement specifies a user-defined
    type that adheres to the rules above and change the
    reference as required.
 
■ If you need additional help, move the cursor to a keyword
  and press F1 to open the Help window.