Starting Version 5.4, the User Limits have been automated and the associated data table zxlimits have changed. You need to drop the old table and recreate it. Important fields are:
Page: The page name,say, opord.
Command: The command that will be disabled if the value of the limit is exceeded. If restricted to a particular tab, use the form <command-name>|<tab-name>, say, Approve|Order, same as in Access Control.
Field: The field name whose value is being compared with, say, xtotamt.
Limit: The limit for the value of the Field, say, 10,000, beyond which the command will be disabled.