FCRA stands for Foreign Contribution (Regulation) Act, 2010. The scope of this Act is to regulate the acceptance and utilisation of foreign contribution by certain individuals or associations or companies and also to prohibit acceptance and utilization of foreign contribution for activities that are detrimental to the national interest.
Donations received through Milaap are regulated by the FCRA. Milaap can transfer funds only to an FCRA registered bank account of an NGO. There are other conditions under the Act that pertain to crowdfunding that can be read here.