diff --git a/kong/clustering/services/sync/validate.lua b/kong/clustering/services/sync/validate.lua
index e23e3a3c9b0..e3969785b21 100644
--- a/kong/clustering/services/sync/validate.lua
+++ b/kong/clustering/services/sync/validate.lua
@@ -11,6 +11,7 @@ local pretty_print_error = declarative.pretty_print_error
 local function validate_deltas(deltas, is_full_sync)
 
   local errs = {}
+  local errs_n = 0
 
   -- generate deltas table mapping primary key string to entity item
   local deltas_map = {}
@@ -45,7 +46,8 @@ local function validate_deltas(deltas, is_full_sync)
 
         local ok, err_t = dao.schema:validate(copy)
         if not ok then
-          errs[#errs + 1] = { [delta_type] = err_t }
+          errs_n = errs_n + 1
+          errs[errs_n] = { [delta_type] = err_t }
         end
       end
     end
diff --git a/spec/02-integration/18-hybrid_rpc/10-validate_deltas_spec.lua b/spec/02-integration/18-hybrid_rpc/10-validate_deltas_spec.lua
index 9b186a761fd..269c492dda8 100644
--- a/spec/02-integration/18-hybrid_rpc/10-validate_deltas_spec.lua
+++ b/spec/02-integration/18-hybrid_rpc/10-validate_deltas_spec.lua
@@ -55,8 +55,18 @@ for _, strategy in helpers.each_strategy() do
           "[error]", true, 10)
         assert.logfile(name).has.line(
           "unable to create worker mutex and sync", true, 10)
+
         assert.logfile(name).has.line(
           "'name': required field missing", true, 10)
+        assert.logfile(name).has.line(
+          "'meta': expected a record", true, 10)
+        assert.logfile(name).has.line(
+          "'config': expected a record", true, 10)
+
+        assert.logfile(name).has.line(
+          "'key': expected a string", true, 10)
+        assert.logfile(name).has.line(
+          "'value': expected a string", true, 10)
 
         local name = nil
 
diff --git a/spec/fixtures/custom_plugins/kong/plugins/rpc-validation-test/handler.lua b/spec/fixtures/custom_plugins/kong/plugins/rpc-validation-test/handler.lua
index b450a21ee88..9bd56f38f2f 100644
--- a/spec/fixtures/custom_plugins/kong/plugins/rpc-validation-test/handler.lua
+++ b/spec/fixtures/custom_plugins/kong/plugins/rpc-validation-test/handler.lua
@@ -21,11 +21,22 @@ function RpcSyncV2ValidationHandler:init_worker()
       {
         entity = {
           id = fake_uuid,
+          meta = "wrong", -- should be a record,
+          config = 100, -- should be a record,
         },
         type = "workspaces",
         version = latest_version,
         ws_id = fake_uuid,
       },
+      {
+        entity = {
+          key = 100, -- should be a string
+          value = {}, -- should be a string
+        },
+        type = "parameters",
+        version = latest_version,
+        ws_id = fake_uuid,
+      },
     }
 
     ngx.log(ngx.DEBUG, "kong.sync.v2.get_delta ok")