Hi Peter,
PFCG Role : SAP_SFIN_TCR_A should already exist in your system, after you have installed app specific components. You dont have to create a new one. You just have to assign users to these roles
LPD_CUST role, also will exist in your system by default. Check LPD_CUST transaction in Gateway system
Also please assign business role : PFCG role : SAP_SFIN_BCR_GLACCOUNTANT
These are standard role. if the role doesn't exist. Contact your basis admin.
Regards,
Tejas