/*What code are you using? Like this : */
proc glm data=sashelp.heart(obs=1000);
class bp_status;
model weight=bp_status/solution;
means bp_status/hovtest;
ods output HOVFTest=HOVFTest OverallANOVA=OverallANOVA;
quit;
If a test of Homogeneity of Variance is significant(a.k.a P value <0.05 ),that means Variance from different groups is different, or means you could not do ANOVA for this data.
But You could try non-parameter version of ANOVA (a.k.a Kruskal-Wallis Test)
proc npar1way data=dataset ;
class treat;
var var;
output out=WILCOXON_ANOVA WILCOXON ;
run;
Also @StatDave @SteveDenham @lvm could give you better code / idea .