Within PTX, the administrator can view the SUNS they have in the system but are unable to edit or add them.
If you were looking to add or edit a Sun, please contact Bottomline Customer Support by dialling +44 (0) 118 925 8250 and choosing option 2 for Technical Support and then option 1 for PTX, HSBC IP Cloud, or Unity EPayments or email emea-support@bottomline.com