I have an issue which I assume is because "incorrect" cfgGroups config. I however can not figure out why.
If I create an OPCOM with the following factions sfp_swe_2015_wd & rhs_faction_usarmy_wd.
I have tried to enter it like ["rhs_faction_usarmy_wd", "sfp_swe_2015_wd"] and without the brackets and quotes aswell.
Doing this I get the following error when I start the mission: "There are different sides within this opcom west! Please only select one side per OPCOM" the TAOR then is filled with EAST units.

If I look in the config for the different addons it looks like it should work (i.e both have side=1):

class sfp_swe_2015_wd
		{
			name="Sweden Woodland - 2015";
			class Infantry
			{
				name="Infantry";
				class BSWE15_InfSquad
				{
					name="Infantry Squad";
					side=1;
					faction="sfp_swe_2015_wd";
					class Unit0
					{
						side=1;
						vehicle="sfp_m90w_squadleader";
						rank="SERGEANT";
						position[]={0,0,0};
					};

class rhs_faction_usarmy_wd
		{
			name="$STR_RHSUSF_FAC_USARMY_WD";
			class rhs_group_nato_usarmy_wd_infantry
			{
				name="$STR_RHS_GROUP_USARMY_infantry";
				aliveCategory="Infantry";
				class rhs_group_nato_usarmy_wd_infantry_squad
				{
					name="$STR_RHSUSF_GROUPS_SQUAD";
					faction="rhs_faction_usarmy_wd";
					side=1;
					rarityGroup=0.75;
					class Unit0
					{
						side=1;
						vehicle="rhsusf_army_ocp_squadleader";
						rank="SERGEANT";
						position[]={0,5,0};
					};

Edit: I realised I actually never tried it with the SFP faction alone and doing that I get the error that there are no valid groups and the TAOR is field with EAST units.
So I guess the problem is the SFP config.

Or mods need to be standardized according to ALiVE's wiki, which can be found here .