法国农业信贷银行寻求欧洲央行批准，将对BPM银行的持股比例提高到20%以上。

Group 1 - The core point of the article is that Crédit Agricole is seeking approval from the European Central Bank to increase its stake in BPM Bank to over 20% [1] Group 2 - This move indicates Crédit Agricole's strategic interest in expanding its influence and investment in the Italian banking sector [1] - The increase in stake could potentially enhance Crédit Agricole's market position and operational synergies with BPM Bank [1] - The approval from the European Central Bank is a critical step for Crédit Agricole to proceed with this investment [1]