Apply suggestions from code review

Co-authored-by: Björn Rabenstein <beorn@grafana.com>
Signed-off-by: George Krajcsovits <krajorama@users.noreply.github.com>

model/histogram/generic.go

@@ -39,7 +39,7 @@ var (
 	ErrHistogramCustomBucketsInfinite = errors.New("histogram custom bounds must be finite")
 	ErrHistogramsIncompatibleSchema   = errors.New("cannot apply this operation on histograms with a mix of exponential and custom bucket schemas")
 	ErrHistogramsIncompatibleBounds   = errors.New("cannot apply this operation on custom buckets histograms with different custom bounds")
-	ErrHistogramsInvalidSchema        = errors.New("histogram has an invalid schema, which must be between -4 and 8 for exponential buckets, or -53 for custom buckets")
+	ErrHistogramsInvalidSchema        = fmt.Errorf("histogram has an invalid schema, which must be between %d and %d for exponential buckets, or %d for custom buckets", ExponentialSchemaMin, ExponentialSchemaMax, CustomBucketsSchema)
 )
 
 func IsCustomBucketsSchema(s int32) bool {

storage/remote/codec.go

@@ -475,7 +475,7 @@ func validateHistogramSchema(h *prompb.Histogram) error {
 	if histogram.IsValidSchema(h.Schema) {
 		return nil
 	}
-	return fmt.Errorf("invalid histogram schema %d", h.Schema)
+	return return fmt.Errorf("%w, got schema %d", h.Schema, histogram.ErrHistogramsInvalidSchema)
 }
 
 func getHistogramValType(h *prompb.Histogram) chunkenc.ValueType {