An ispec transmitted with its Maint built-in attribute set to NEX recalls the next database record (the ispec record with the next-highest key value to that specified). If no key value is specified, the first record is retrieved (the ispec record with the lowest key value).
This recall function does not change any values in the database record, including the value of the Maint attribute.
Restrictions
The following restrictions apply to the use of NEX:
It is only valid if the ispec's Auto Recall property is set to true.
It is not valid if the ispec has a persistent key that does not appear in the user interface.
The following restrictions apply to the transmitted key:
Number validation is performed, therefore decimal points or separator characters (if required) must be included for number-primitive keys.
Trailing zeros must be included if the key contains decimals.
Where the key is also a keyword, leading zeros must be entered for number-primitive variables.