The use of DBCS input fields affects the total number of input fields allowed on a display. For a local 5250 display station, you can specify as many as 256 input fields. However, each three instances of a DBCS field reduces the maximum number of fields by one.
For example, if there are 9 DBCS fields on a display, then the maximum is 256 - (9/3) = 253 input fields.