To meet the requirements, you must belong to one of the following cultures: Castilian, Basque, Portuguese, Catalan, Andalusian, Visigothic, or Suebi. Additionally, you need to follow the Muslim faith, have your capital located in the Iberian region, and have taken the Avenge the Battle of Tours decision while fully controlling the Iberian region. In 867, replace the Umayyad Sultan with a custom character of Andalusian culture and Muwalladism faith to address the initial Popular Opinion challenge. Begin by surrendering in the starting wars, then swiftly conquer the independent counties before Asturias can claim them, followed by securing the island counties to the east. Once prepared, reclaim the rebelled duchies to solidify control.