--- postgresql-13-13.2.orig/src/backend/libpq/hba.c
+++ postgresql-13-13.2/src/backend/libpq/hba.c
@@ -1678,12 +1678,6 @@ parse_hba_auth_opt(char *name, char *val
  
        if (strcmp(name, "map") == 0)
        {
-               if (hbaline->auth_method != uaIdent &&
-                       hbaline->auth_method != uaPeer &&
-                       hbaline->auth_method != uaGSS &&
-                       hbaline->auth_method != uaSSPI &&
-                       hbaline->auth_method != uaCert)
-                       INVALID_AUTH_OPTION("map", gettext_noop("ident, peer, gssapi, sspi, and cert"));
                hbaline->usermap = pstrdup(val);
        }
        else if (strcmp(name, "clientcert") == 0)