# ECI

The Electronic Commerce Indicator (ECI) is a code by the Directory Server (such as Visa, MasterCard, JCB, and American Express) as output against a 3DS transaction.

**ECI codes sent from VISA, American Express, and JCB**

<table><thead><tr><th width="112">ECI Code</th><th>Description</th></tr></thead><tbody><tr><td>ECI 05</td><td>Successful 3DS transaction - the card has a 3DS system and successfully fills in the appropriate OTP</td></tr><tr><td>ECI 06</td><td>The 3DS system has been attempted but not done; Usually occurs because the card does not have a 3DS system</td></tr><tr><td>ECI 07</td><td>3DS system was not successful; Usually occurs because the card does not have a 3DS system, there are technical / connection problems, or configuration / configuration errors.</td></tr></tbody></table>

&#x20;**ECI code sent from MasterCard**

<table><thead><tr><th width="113">ECI Code</th><th>Description</th></tr></thead><tbody><tr><td>ECI 02</td><td>Successful 3DS transaction - the card has a 3DS system and successfully fills in the appropriate OTP</td></tr><tr><td>ECI 01</td><td>The 3DS system has been attempted but not done; Usually occurs because the card does not have a 3DS system</td></tr><tr><td>ECI 00</td><td>3DS system was not successful; Usually occurs because the card does not have a 3DS system, there are technical / connection problems, or configuration / configuration errors</td></tr></tbody></table>


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