1 files changed, 15 insertions, 0 deletions
diff --git a/errors.go b/errors.go
new file mode 100644
index 0000000..25e9e0c
--- /dev/null
+++ b/errors.go
@@ -0,0 +1,15 @@
+package inwx
+
+import "fmt"
+
+// ErrUnexpectedStatus indicates that a Call was responded to
+// but the Status doesn't match any of the expected Statuses of the Call.
+type ErrUnexpectedStatus struct {
+	Expected []Status
+	Got      Status
+}
+
+func (e *ErrUnexpectedStatus) Error() string {
+	const format = "unexpected status code: expected %v, got %v"
+	return fmt.Sprintf(format, e.Expected, e.Got)
+}