diff --git a/docs/architecture/adr-030-authz-module.md b/docs/architecture/adr-030-authz-module.md
index 0bdf08ecb6..b9c0720e10 100644
--- a/docs/architecture/adr-030-authz-module.md
+++ b/docs/architecture/adr-030-authz-module.md
@@ -117,6 +117,15 @@ A different type of capability for `MsgSend` could be implemented
 using the `Authorization` interface with no need to change the underlying
 `bank` module.
 
+##### Small notes on `AcceptResponse`
+
+- The `AcceptResponse.Accept` field will be set to `true` if the authorization is accepted.
+However, if it is rejected, the function `Accept` will raise an error (without setting `AcceptResponse.Accept` to `false`).
+
+- The `AcceptResponse.Updated` field will be set to a non-nil value only if there is a real change to the authorization.
+If authorization remains the same (as is, for instance, always the case for a [`GenericAuthorization`](#genericauthorization)),
+the field will be `nil`.
+
 ### `Msg` Service
 
 ```proto
diff --git a/x/authz/spec/01_concepts.md b/x/authz/spec/01_concepts.md
index cfa46a09f0..c4cc63acc4 100644
--- a/x/authz/spec/01_concepts.md
+++ b/x/authz/spec/01_concepts.md
@@ -32,7 +32,7 @@ The Cosmos SDK `x/authz` module comes with following authorization types:
 
 ### SendAuthorization
 
-`SendAuthorization` implements the `Authorization` interface for the `cosmos.bank.v1beta1.MsgSend` Msg. It takes a `SpendLimit` that specifies the maximum amount of tokens the grantee can spend. The `SpendLimit` is updated as the tokens are spent.
+`SendAuthorization` implements the `Authorization` interface for the `cosmos.bank.v1beta1.MsgSend` Msg. It takes a (positive) `SpendLimit` that specifies the maximum amount of tokens the grantee can spend. The `SpendLimit` is updated as the tokens are spent.
 
 +++ https://github.com/cosmos/cosmos-sdk/blob/v0.43.0-beta1/proto/cosmos/bank/v1beta1/authz.proto#L10-L19
 
diff --git a/x/bank/types/send_authorization.go b/x/bank/types/send_authorization.go
index 75a47cdf0d..08a7b641fe 100644
--- a/x/bank/types/send_authorization.go
+++ b/x/bank/types/send_authorization.go
@@ -45,7 +45,7 @@ func (a SendAuthorization) ValidateBasic() error {
 		return sdkerrors.ErrInvalidCoins.Wrap("spend limit cannot be nil")
 	}
 	if !a.SpendLimit.IsAllPositive() {
-		return sdkerrors.ErrInvalidCoins.Wrapf("spend limit cannot be negitive")
+		return sdkerrors.ErrInvalidCoins.Wrapf("spend limit must be positive")
 	}
 	return nil
 }