data flow is the first step processing of your papers. evaluation is the 2nd step processing of your documents. certificate of good standing is the prc record indicating that you are practicing your degree w/o any negative record. to be send by prc directly from their office. dataflow it takes time before you reciv the results. i myself is still waiting for the positive results, according to some people that i meet in sch they are conducting verification through phone if youre documents is authentic ang original.last five years experienced is also required.