1.1 Go to Setup (S) >> Customization >> Layouts and Fields. Select Tickets under Layouts and the required Department. Access the active layout and add a custom field of your choice.  

1.1.1 Hover the mouse pointer over the custom field created, click on the Gear wheel icon >> Edit Properties. Note the API Name under the Edit Field. Click Update. Then, click Save and Close. 

1.2  Go to Setup (S) >> Customization >> Layouts and Fields. Select Accounts under Layouts, and in the Department drop-down, select the default department. Access the active layout and add a custom field of the same type as you have added in Tickets layout (1.1) .  

1.2.1 Hover the mouse pointer over the custom field created, click on the Gear wheel icon >> Edit Properties. Note the API Name under the Edit Field. Click Update. Then click Save and Close.     

NOTE

a. In Line 2, Replace ".com" with the domain extension based on your Data Center.

b. In Line 5, add the API name of the custom field created within the Account and Tickets layout in this pattern {"cf_account_field":"cf_ticket_field"}

13. Click Edit Arguments and include the argument mapping as below: 

14.1 In the Name field, type ticketId and select TicketId under the Tickets Section, from the Value drop-down list.

14.2 Add another Name field, type accountId and select Account Id under the Accounts Section, from the Value drop-down list.