См. также: police call-out, police raid, police uniform, policymaker
In any case, if it's for work, schooling, or travel use, having a legitimate police clearance certificate implies that you have no criminal records covering the time or stay in the nation. (Legal Service India)
The real purpose of a police clearance certificate is to prove whether or not you have a criminal record, which in many countries is called a ‘certificate of good standing’, allowing them to feel confident that they aren’t welcoming a criminal into their country. A police clearance certificate is also a requirement for people working in high security sectors, and even for people who are applying for employment locally, since many employers now insist on a PCC being part of the employment process. (Doc Assist, South Africa)
