diff --git a/docs/references/errors.rst b/docs/references/errors.rst
index a4ff1a987..ba416a508 100644
--- a/docs/references/errors.rst
+++ b/docs/references/errors.rst
@@ -67,6 +67,8 @@ PostgREST translates `PostgreSQL error codes <https://www.postgresql.org/docs/cu
 +--------------------------+-------------------------+---------------------------------+
 | 40*                      | 500                     | transaction rollback            |
 +--------------------------+-------------------------+---------------------------------+
+| 53400                    | 500                     | config limit exceeded           |
++--------------------------+-------------------------+---------------------------------+
 | 53*                      | 503                     | insufficient resources          |
 +--------------------------+-------------------------+---------------------------------+
 | 54*                      | 413                     | too complex                     |