Neighbor being automatically deleted from 4G sites

4G LTE
1

Hi All,
NBR is deleting automatically from 4G sites.
Can anybody tell me the reason?

2

Check if ANR is enabled for deletion.

3

Do you have ANR enabled?

4

You can check SON log if ANR automatic delete NBR or not.

5

If ANR is set with acute limits.
Need to check ANR deletion settings.

6

Check if ANR is enabled for deletion.
Also check removeNcellTime.