contactLinkSummary provides additional information about type Author/Customer and multiple accounts linked to the user on createSession web services if requested.
| Field ID | Description | Type | Occurrence |
| authorFlag | True if user is linked to an AP account as an author. | Boolean | 1..1 |
| customerFlag | True if user is linked to an AR account as a customer. | Boolean | 1..1 |
| multipleAuthors | True if user is linked to more than 1 AP account as an author. | Boolean | 1..1 |
| multipleCustomers | True if user is linked to more than 1 AP account as an author. If true then one of the customers must be selected to be the customer for the session. | Boolean | 1..1 |
