# Account Aliases
source: https://developer.mastercard.com/mastercard-send/documentation/account-aliases/index.md

The Consumer Mapping service enables you to associate account aliases (such as email addresses or Social Security Numbers) with specific Account resources so that those aliases can be used in API requests to initiate payments from/to those accounts.

To use an account alias in an API request (as an Account URI), specify it using the format `sds-account-alias:{schema}={alias}`. The following table shows the available schemas and data formats.

| Schema |                                                                                                                                                                                                                                                        Specifies                                                                                                                                                                                                                                                        |                          Example                           | Alias Length |
|--------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------|--------------|
| email  | Email address. Format: `email={local-part}@{domain}` Allowed characters and rules in {local-part} are: * Alphanumeric with characters hyphen (-), underscore (_), plus (+), dot (.) and single quote (') * Plus (+) character should occur before first dot (.) character Allowed characters and rules in {domain} are: <!-- --> * Alphanumeric with characters dot (.) and hyphen (-) * Any hyphen (-) character should occur before first dot (.) character * Only alphabets are allowed after last dot (.) character | sds-account-alias:email=test123@abcmail.com                | 5-254        |
| tel    | Telephone number, which must include the country code and the fully qualified country-specific phone number. This telephone number must be mapped to a card account number through PAN mapping or a registered consumer. Format: `tel={telephone-number}`, where {telephone-number} is the Mobile Station International Subscriber Directory Number (MSISDN) = CC + NDC (or NPA) + SN * CC = Country Code * NDC = National Destination Code * NPA = Number Planning Area * SN = Subscriber Number Numeric.              | sds-account-alias:tel=12125559175                          | 1-15         |
| social | Social network identifier. Format: `social={network}/{user-id}` * {network} = The social network name. Valid values: Odnoklassniki, VK. * {user-id} = The user identifier for that social network. Alphanumeric with special characters: .!#$%\&\*()_-+@"',:;\<\>=?\[\\\]}{\~/\|                                                                                                                                                                                                                                        | sds-account-alias:social=Odnoklassniki/test123@abcmail.com | 3-254        |
| ppn    | Passport Number. Format: `ppn={passport-number}` Alphanumeric with special characters hyphen (-) and forward slash (/).                                                                                                                                                                                                                                                                                                                                                                                                 | sds-account-alias:ppn=123456700                            | 2-80         |
| ssn    | Social Security Number. Format: `ssn={social-security-number}` Numeric.                                                                                                                                                                                                                                                                                                                                                                                                                                                 | sds-account-alias:ssn=078051120                            | 9            |
| ein    | Employer Identification Number. Format: `ein={employer-identification-number}` Alphanumeric with special characters hyphen (-) and forward slash (/).                                                                                                                                                                                                                                                                                                                                                                   | sds-account-alias:ein=322124444                            | 2-80         |
| tin    | Tax Identification Number. Format: `tin={tax-identification-number}` Alphanumeric with special characters hyphen (-) and forward slash (/).                                                                                                                                                                                                                                                                                                                                                                             | sds-account-alias:tin=987654123                            | 2-80         |
| aln    | Alien Registration Number. Format `aln={alien-registration-number}` Alphanumeric with special characters hyphen (-) and forward slash (/).                                                                                                                                                                                                                                                                                                                                                                              | sds-account-alias:aln=000000773                            | 2-80         |
| cus    | Customer Number. Format: `cus={customer-number}` Alphanumeric with special characters hyphen (-) and forward slash (/).                                                                                                                                                                                                                                                                                                                                                                                                 | sds-account-alias:cus=001002654321                         | 2-80         |
| idc    | Identity Card Number. Format: `idc={identity-card-number}` Alphanumeric with special characters hyphen (-) and forward slash (/).                                                                                                                                                                                                                                                                                                                                                                                       | sds-account-alias:idc=12341234987006                       | 2-80         |
| dln    | Driver's License Number. Format: `dln={driver-license-number}` Alphanumeric with special characters hyphen (-) and forward slash (/).                                                                                                                                                                                                                                                                                                                                                                                   | sds-account-alias:dln=NHL12506717                          | 2-80         |
| nat    | National ID Number. Format: `nat={national-id-number}` Alphanumeric with special characters hyphen (-) and forward slash (/).                                                                                                                                                                                                                                                                                                                                                                                           | sds-account-alias:nat=QQ123456C                            | 2-80         |