Roland S-220 Owner's Manual page 100

Lo Comber
Maerua
Emebo bark
& maruel
When this error message is indicated, the select-
ed Structure is irrelevant, and therefore, cannot be
wave modified. Select the appropriate Structure
by pushing the corresponding Structure Button
then the Enter button. Then repeat the whole
procedure, (If two Structures are relevant, take the
above procedure for both Structures.)
100