DISCLAIMER This UDIN System has been developed by ICAI to facilitate its members for verification and certification of the documents and for securing documents and authenticity thereof by Regulators. However, ICAI assumes no responsibility of verification and certification of document (s) carried out by the Members and the concerned member (s) shall alone be responsible therefore. This UDIN System has been developed by ICAI to facilitate its members for verification and certification of the documents and for securing documents and authenticity thereof by Regulators. Register into the ICAI portal and create your CA DIN Number using the UDIN Login . Also, you can check and verify the status of your UDIN . About UDIN The concept of UDIN (Unique Document Identification Number) is proposed to curb the malpractices of misleading the Authorities and Stakeholders by non-CMAs misrepresenting themselves as CMAs and attesting the Costing Data / documents / certificates. . .