Two CSFB requests sent at same time?

Mobility
,
1

Hi All.

What is the main CSFB Failure here?

As Block Type is Tracking Area Update request during CSFB request

Is it two requests are sending at same time or other reason?

Two CSFB requests sent at same time
Two CSFB requests sent at same time1253×713 90.5 KB

2

Here it seems TAC not updated or not properly defined by mapping with legacy network.