diff --git a/python/core/qgsvectorlayer.sip b/python/core/qgsvectorlayer.sip
index 7750369fbd4..064e8fcdeb6 100644
--- a/python/core/qgsvectorlayer.sip
+++ b/python/core/qgsvectorlayer.sip
@@ -1432,6 +1432,9 @@ Assembles mUpdatedFields considering provider fields, joined fields and added fi
 
     QMap< QgsFieldConstraints::Constraint, QgsFieldConstraints::ConstraintStrength> fieldConstraintsAndStrength( int fieldIndex ) const;
 %Docstring
+ Returns a map of constraint with their strength for a specific field of the layer.
+ \param fieldIndex field index
+.. versionadded:: 3.0
  :rtype: QMap< QgsFieldConstraints.Constraint, QgsFieldConstraints.ConstraintStrength>
 %End
 
diff --git a/src/core/qgsvectorlayer.h b/src/core/qgsvectorlayer.h
index d9b53707433..364333ac8cb 100644
--- a/src/core/qgsvectorlayer.h
+++ b/src/core/qgsvectorlayer.h
@@ -1347,6 +1347,11 @@ class CORE_EXPORT QgsVectorLayer : public QgsMapLayer, public QgsExpressionConte
      */
     QgsFieldConstraints::Constraints fieldConstraints( int fieldIndex ) const;
 
+    /**
+     * Returns a map of constraint with their strength for a specific field of the layer.
+     * \param fieldIndex field index
+     * \since QGIS 3.0
+     */
     QMap< QgsFieldConstraints::Constraint, QgsFieldConstraints::ConstraintStrength> fieldConstraintsAndStrength( int fieldIndex ) const;
 
     /**