Was there unified legislation in France in the 10th-11th centuries?

In the 10th century, after the collapse of the Carolingian Empire, numerous feudal wars were fought in France. The country was torn to pieces by many duchies and fiefdoms. By and large, the dukes of Normandy and the dukes of Paris could not divide the lands between themselves. Large feudal lords were practically independent, although they were among the subjects of the king. Two linguistic domination in the country only aggravated the feudal fragmentation. In the X-XI centuries, feudal disagreements were gaining momentum. But the current monarch gradually strengthened his power and expanded the boundaries of his possessions.