WAFL error on a flexgroup?

Hello All,

Seeing this error repeatedly in the logs:

wafl.vol.fsp.full:error]: volume 
scharp_systems__0002@vserver:51aa02de-9c6e-11eb-9f37-d039ea257af4: 
insufficient space in FSP wafl_remote_reserve to satisfy a request of 0 
holes and 12 overwrites.

An online search is giving me nothing meaningful, not even NetApp 
specific results.

Note that this is a constituent volume for a larger flexgroup (which are 
new to us).

Is the constituent volume full? If so, is there some reason data isn't 
balanced automatically across the constituents of a flexgroup?

Hope to hear from you,

Randy in Seatlle