diff --git a/src/tree_schema.c b/src/tree_schema.c
index fa9a8ee..92c124b 100644
--- a/src/tree_schema.c
+++ b/src/tree_schema.c
@@ -791,6 +791,19 @@
     return NULL;
 }
 
+API LY_ERR
+lysc_node_set_private(const struct lysc_node *node, void *priv, void** prev_priv_p)
+{
+    LY_CHECK_ARG_RET(NULL, node, LY_EINVAL);
+
+    if (prev_priv_p) {
+        *prev_priv_p = node->priv;
+    }
+    ((struct lysc_node *)node)->priv = priv;
+
+    return LY_SUCCESS;
+}
+
 LY_ERR
 lys_set_implemented_internal(struct lys_module *mod, uint8_t value)
 {
diff --git a/src/tree_schema.h b/src/tree_schema.h
index 976d3fd..1f2630c 100644
--- a/src/tree_schema.h
+++ b/src/tree_schema.h
@@ -2038,6 +2038,17 @@
 const struct lysc_node *lysc_node_is_disabled(const struct lysc_node *node, int recursive);
 
 /**
+ * @brief Set a schema private pointer to a user pointer.
+ *
+ * @param[in] node Node, whose private field will be assigned.
+ * @param[in] priv Arbitrary user-specified pointer.
+ * @param[out] prev_priv_p Pointer to the previous private data being returned after replacinf by @p priv.
+ * @return LY_EINVAL in case of invalid @p node.
+ * @return LY_SUCCESS on success.
+ */
+LY_ERR lysc_node_set_private(const struct lysc_node *node, void *priv, void **prev_priv_p);
+
+/**
  * @brief Check type restrictions applicable to the particular leaf/leaf-list with the given string @p value.
  *
  * This function check just the type's restriction, if you want to check also the data tree context (e.g. in case of