It's not important. It means we want to send you fractions of one sat, but your wallet won't let us, so we have to round it down to a sat. 

e.g. we want to send you 100.5 sats but can only send you 100 sats

k00b

i ve tried to look for some info before posting it but i did not find anything in relation.

or may be i did not look correctly

The day CC was introduced, someone asked this question, and ek replied, you can ignore it. 

NovaRift

Stacker Saloon

saloon

i m using Alby and i ve just noticed that in the logs i ve this warining message.

WARN	wallet does not support msats

Is it important ?