a. Open your CSR with a suitable editing tool i.e. notepad or vim.
b. Copy the contents of the file “yourcsrname”.csr (This will be replaced by your preferred name) and paste in the box from the link https://cryptoreport.websecurity.symantec.com/checker/views/csrCheck.jsp
c. Check for errors by clicking on Check button as illustrated below:
d. Submit your CSR for signing by the respective Certificate Authority (CA).
In case of error(s) during CSR check, generate a new CSR and check it.