Is List Entry Applicable hook
Use this hook to indicate whether a certain list constant is applicable. If the list constant is not applicable it is not displayed in the field's drop down list box, so the end-user cannot select it.
The constant names to be used in the hooks are the constants that are defined for the domain of the table field. The constant names can be found in the Domains (ttadv4500m000) session, Enum/Set data.
Example:
function extern boolean tdsls400.osta.closed.is.applicable(long mode)
{
return(txcomdll0001.sales.order.can.be.closed())
}