diff --git a/src/__tests__/if-run/lib/regroup.test.ts b/src/__tests__/if-run/lib/regroup.test.ts
index 9f0b373ff..67ff72e53 100644
--- a/src/__tests__/if-run/lib/regroup.test.ts
+++ b/src/__tests__/if-run/lib/regroup.test.ts
@@ -86,7 +86,7 @@ describe('lib/regroup: ', () => {
         expect(error).toBeInstanceOf(InputValidationError);
         expect(error).toEqual(
           new InputValidationError(
-            '"groups" parameter is required. Error code: invalid_type.'
+            '"regroup" parameter is not an array or should contain at least one key. Error code: invalid_type.'
           )
         );
       }
@@ -135,7 +135,7 @@ describe('lib/regroup: ', () => {
         expect(error).toBeInstanceOf(InputValidationError);
         expect(error).toEqual(
           new InputValidationError(
-            '"groups" parameter is regroup phase is not an array or should contain at least one key.. Error code: too_small.'
+            '"regroup" parameter is array must contain at least 1 element(s). Error code: too_small.'
           )
         );
       }
diff --git a/src/if-run/config/strings.ts b/src/if-run/config/strings.ts
index 24835f8ed..e5e6e449b 100644
--- a/src/if-run/config/strings.ts
+++ b/src/if-run/config/strings.ts
@@ -24,8 +24,7 @@ export const STRINGS = {
   METRIC_MISSING: (metric: string, index: number) =>
     `Aggregation metric ${metric} is not found in inputs[${index}].`,
   INVALID_GROUP_KEY: (key: string) => `Invalid group ${key}.`,
-  REGROUP_ERROR:
-    'Regroup phase is not an array or should contain at least one key.',
+  REGROUP_ERROR: 'not an array or should contain at least one key',
   INVALID_EXHAUST_PLUGIN: (pluginName: string) =>
     `Invalid exhaust plugin: ${pluginName}.`,
   UNKNOWN_PARAM: (name: string) =>
diff --git a/src/if-run/lib/regroup.ts b/src/if-run/lib/regroup.ts
index eba87a4d0..affd51307 100644
--- a/src/if-run/lib/regroup.ts
+++ b/src/if-run/lib/regroup.ts
@@ -44,12 +44,13 @@ export const Regroup = (inputs: PluginParams[], groups: string[]) => {
   /**
    * Validates groups array.
    */
-  const validateGroups = (groups: string[]) => {
-    const inputData = {groups};
+  const validateGroups = (regroup: string[]) => {
+    const inputData = {regroup};
     const validationSchema = z.record(
       z.string(),
-      z.array(z.string()).min(1, REGROUP_ERROR)
+      z.array(z.string(), {message: REGROUP_ERROR}).min(1)
     );
+
     validate(validationSchema, inputData);
 
     return groups;