The Ticket field on the AP Unapproved Invoice Entry form, Lines section, Info tab.

This field only displays for 1-Job lines and job-related 6-PO lines that reference a field ticket.

For Job lines: Enter the field ticket number for this unapproved invoice line or press F4 to select from a list of valid open field tickets for the specified job/contract.

For job-related PO lines: This field defaults the field ticket specified for the purchase order item and is disabled.
Note: Costs associated with approved field tickets only impact T&M billings; therefore, assigning field tickets to job lines is only useful if the job's contract/contract item has a bill type of T&M or Both.

Once you post the invoice (via AP Unapproved Invoice Posting), the system updates the Cost Detail tab in JC Field Ticket with this line's transaction information, showing a Source of AP Entry.

For more information about field tickets, see JC Field Ticket Form.