Judging by the numbervthst follows - this refers to the legal case number.
The letters preceding the actual number denote the case type.

However, there is no file type with the initials ת.מ.א...

Based on the field - the type could be ת.מ.ש
(תיק משפחתי)
Or perhaps ת.א or ת.י.א
(תיק אזרחי)

The list of file types can be browsed here:
http://www.easycite.co.il/index.php?option=com_content&view=...


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Note added at 1 day 10 mins (2018-01-06 17:30:54 GMT)
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Sorry for the typos... I'm on my cellphone...