diff --git a/backend/src/server/routes/index.ts b/backend/src/server/routes/index.ts
index 9534ca8b0..d2d44002c 100644
--- a/backend/src/server/routes/index.ts
+++ b/backend/src/server/routes/index.ts
@@ -1728,7 +1728,8 @@ export const registerRoutes = async (
   const convertorService = convertorServiceFactory({
     additionalPrivilegeDAL,
     membershipDAL,
-    projectDAL
+    projectDAL,
+    groupDAL
   });
 
   const dynamicSecretProviders = buildDynamicSecretProviders({
diff --git a/backend/src/server/routes/v1/group-project-router.ts b/backend/src/server/routes/v1/group-project-router.ts
index 15f3a1e1e..5957daddb 100644
--- a/backend/src/server/routes/v1/group-project-router.ts
+++ b/backend/src/server/routes/v1/group-project-router.ts
@@ -15,6 +15,7 @@ import { ms } from "@app/lib/ms";
 import { readLimit, writeLimit } from "@app/server/config/rateLimiter";
 import { verifyAuth } from "@app/server/plugins/auth/verify-auth";
 import { AuthMode } from "@app/services/auth/auth-type";
+import { isUuidV4 } from "@app/lib/validator";
 
 export const registerGroupProjectRouter = async (server: FastifyZodProvider) => {
   server.route({
@@ -74,10 +75,16 @@ export const registerGroupProjectRouter = async (server: FastifyZodProvider) =>
       }
     },
     handler: async (req) => {
+      let groupId = req.params.groupIdOrName;
+      if (!isUuidV4(req.params.groupIdOrName)) {
+        const groupDetails = await server.services.convertor.getGroupIdFromName(groupId, req.permission.orgId);
+        groupId = groupDetails.groupId;
+      }
+
       const { membership: groupMembership } = await server.services.membershipGroup.createMembership({
         permission: req.permission,
         data: {
-          groupId: req.params.groupIdOrName,
+          groupId,
           roles: req.body.roles || [{ role: req.body.role, isTemporary: false }]
         },
         scopeData: {
diff --git a/backend/src/server/routes/v2/deprecated-group-project-router.ts b/backend/src/server/routes/v2/deprecated-group-project-router.ts
index fad15e352..ca7753039 100644
--- a/backend/src/server/routes/v2/deprecated-group-project-router.ts
+++ b/backend/src/server/routes/v2/deprecated-group-project-router.ts
@@ -15,6 +15,7 @@ import { ms } from "@app/lib/ms";
 import { readLimit, writeLimit } from "@app/server/config/rateLimiter";
 import { verifyAuth } from "@app/server/plugins/auth/verify-auth";
 import { AuthMode } from "@app/services/auth/auth-type";
+import { isUuidV4 } from "@app/lib/validator";
 
 export const registerDeprecatedGroupProjectRouter = async (server: FastifyZodProvider) => {
   server.route({
@@ -74,10 +75,16 @@ export const registerDeprecatedGroupProjectRouter = async (server: FastifyZodPro
       }
     },
     handler: async (req) => {
+      let groupId = req.params.groupIdOrName;
+      if (!isUuidV4(req.params.groupIdOrName)) {
+        const groupDetails = await server.services.convertor.getGroupIdFromName(groupId, req.permission.orgId);
+        groupId = groupDetails.groupId;
+      }
+
       const { membership: groupMembership } = await server.services.membershipGroup.createMembership({
         permission: req.permission,
         data: {
-          groupId: req.params.groupIdOrName,
+          groupId,
           roles: req.body.roles || [{ role: req.body.role, isTemporary: false }]
         },
         scopeData: {
diff --git a/backend/src/services/convertor/convertor-service.ts b/backend/src/services/convertor/convertor-service.ts
index fe33c3ae8..4165d8836 100644
--- a/backend/src/services/convertor/convertor-service.ts
+++ b/backend/src/services/convertor/convertor-service.ts
@@ -4,10 +4,12 @@ import { NotFoundError } from "@app/lib/errors";
 import { TAdditionalPrivilegeDALFactory } from "../additional-privilege/additional-privilege-dal";
 import { TMembershipDALFactory } from "../membership/membership-dal";
 import { TProjectDALFactory } from "../project/project-dal";
+import { TGroupDALFactory } from "@app/ee/services/group/group-dal";
 
 type TConvertorServiceFactoryDep = {
   projectDAL: Pick<TProjectDALFactory, "findOne">;
   membershipDAL: Pick<TMembershipDALFactory, "findOne">;
+  groupDAL: Pick<TGroupDALFactory, "findOne">;
   additionalPrivilegeDAL: Pick<TAdditionalPrivilegeDALFactory, "findOne">;
 };
 
@@ -16,7 +18,8 @@ export type TConvertorServiceFactory = ReturnType<typeof convertorServiceFactory
 export const convertorServiceFactory = ({
   projectDAL,
   membershipDAL,
-  additionalPrivilegeDAL
+  additionalPrivilegeDAL,
+  groupDAL
 }: TConvertorServiceFactoryDep) => {
   const projectSlugToId = async (dto: { slug: string; orgId: string }) => {
     const project = await projectDAL.findOne({
@@ -108,6 +111,12 @@ export const convertorServiceFactory = ({
     return { privilegeId: privilege.id, privilege };
   };
 
+  const getGroupIdFromName = async (name: string, orgId: string) => {
+    const group = await groupDAL.findOne({ orgId, name });
+    if (!group) throw new NotFoundError({ message: `Failed to find group with name ${name}` });
+    return { groupId: group.id, group };
+  };
+
   return {
     projectSlugToId,
     userMembershipIdToUserId,
@@ -115,6 +124,7 @@ export const convertorServiceFactory = ({
     identityMembershipIdToIdentityId,
     additionalPrivilegeIdToDoc,
     additionalPrivilegeNameToDoc,
-    identityIdToMembershipId
+    identityIdToMembershipId,
+    getGroupIdFromName
   };
 };