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Community Service Register is the register maintained in all the Indian police stations for a non cognizable offence. If the offence is a cognizable offence then a (FIR) First Information Report is created & registered. CSR is also called as Daily Diary Report or Diary Report.
After filing a police complaint, the CSR receipt is often used to claim insurance settlements & adds as a proof of filing a complaint in the police station.
Video Community Service Register (India)
References
1. Lawyers Club India
2. The Hindu Daily Newspaper
Source of the article : Wikipedia