Octave FOTA & Save Bookmark error

I kept getting the following error message when I tried to save bookmark or doing FOTA on Octave. This happened on one FX30S on the field. Anyone know what is the cause and how can I solve this issue?

{“action”:“PUSH_CONFIGURATION_FAULT”,“details”:{“reason”:“lwm2m.write.failure [BAD_REQUEST [cloudInterface.dh.cfg]]”}}

Hi
your device embeds 3.3.1 and the blueprint that you tried to push has a length greater than 100kB (107340 bytes)
On 3.3.1, the maximum size of a blueprint is 100 kB, else such error is returned by the edge.

Octave supports a maximum Blueprint data size of 100,000 characters including comments and line feeds/carriage returns.

Source: Creating and Managing Blueprints

The supported size on edge side will be increased in 3.4.0

Thanks, Frederic.
I can successfully save blueprint after removing some EA.
However, is there any way to check the size of the blueprint so user will know if it is over the limit?

James