When trying to view your SNMP configuration from within the Web UI you may observe the following error:

No object identifier specified in context

Solution

To resolve this remove the community via bigpipe and save.
You will then notice that the SNMP community has been removed via the Web UI. This can then be re-added if required.

[root@f5-ltm:Active] config # b snmpd { community { commstring } delete }
[root@f5-ltm:Active] config # b save all