It suffices to state, firstly, that an appellate court can only hear and decide on issues raised on the grounds of appeal filed before it and an issue not covered by any ground of appeal is incompetent and will be struck out. – Iguh, JSC. Oshatoba v. Olujitan (2000)
COURT DOES NOT DETERMINE ISSUES THAT ARE INCOMPETENT
The law is that once a preliminary objection succeeds in respect of some issues for determination in an appeal, there will be no need to go further to consider the arguments proffered on those issues formulated for determination which have been found to be infirmed and incompetent. See: Mosoba v. Abubakar (2005) 6 NWLR (Pt. 922) 460; NEPA v. Ango (2001) 15 NWLR (pt. 737) 627 at 645-6 46; Ralph Uwazurike and Ors v. Attorney General of the Federation (2007) 2 SCNJ 369 at p.380; B.A.S.F. Nig. Ltd v. Faith Enterprises Ltd (2010) 1 SCNJ 223 at P.249.
— T.S. YAKUBU, JCA. Fayose v ICN (2012) – CA/AE/58/2010