Update mod.rs
As many people are unbonding, I've had to explain this to a handful of people recently. This improves the error message a bit and puts it in the error description, so that it is shown in the front page of all explorers if `unbond` fails, hopefully making it clear.
@@ -608,7 +608,9 @@ pub mod pallet {
DuplicateIndex,
/// Slash record index out of bounds.
InvalidSlashIndex,
- /// Can not bond with value less than minimum required.
+ /// Cannot have a validator or nominator role, with value less than the minimum defined by
+ /// governance (see `MinValidatorBond` and `MinNominatorBond`). If unbonding is the
+ /// intention, `chill` first to remove one's role as validator/nominator.
InsufficientBond,
/// Can not schedule more unlock chunks.
NoMoreChunks,
