diff --git a/packages/twenty-front/src/modules/page-layout/hooks/__tests__/usePageLayoutWithRelationWidgets.test.tsx b/packages/twenty-front/src/modules/page-layout/hooks/__tests__/usePageLayoutWithRelationWidgets.test.tsx
index 6792ed9e2f..f76ad20f76 100644
--- a/packages/twenty-front/src/modules/page-layout/hooks/__tests__/usePageLayoutWithRelationWidgets.test.tsx
+++ b/packages/twenty-front/src/modules/page-layout/hooks/__tests__/usePageLayoutWithRelationWidgets.test.tsx
@@ -5,6 +5,9 @@ import { type PageLayout } from '@/page-layout/types/PageLayout';
 import { useLayoutRenderingContext } from '@/ui/layout/contexts/LayoutRenderingContext';
 import { renderHook } from '@testing-library/react';
 import {
+  AggregateOperations,
+  BarChartLayout,
+  GraphOrderBy,
   PageLayoutType,
   WidgetConfigurationType,
   WidgetType,
@@ -100,11 +103,11 @@ describe('usePageLayoutWithRelationWidgets', () => {
             configuration: {
               __typename: 'BarChartConfiguration',
               configurationType: WidgetConfigurationType.BAR_CHART,
-              layout: 'VERTICAL',
-              aggregateOperation: 'COUNT',
+              layout: BarChartLayout.VERTICAL,
+              aggregateOperation: AggregateOperations.COUNT,
               aggregateFieldMetadataId: 'id',
               primaryAxisGroupByFieldMetadataId: 'createdAt',
-              primaryAxisOrderBy: 'FIELD_ASC',
+              primaryAxisOrderBy: GraphOrderBy.FIELD_ASC,
               displayDataLabel: false,
             },
             createdAt: new Date().toISOString(),
@@ -222,11 +225,11 @@ describe('usePageLayoutWithRelationWidgets', () => {
               configuration: {
                 __typename: 'BarChartConfiguration',
                 configurationType: WidgetConfigurationType.BAR_CHART,
-                layout: 'VERTICAL',
-                aggregateOperation: 'COUNT',
+                layout: BarChartLayout.VERTICAL,
+                aggregateOperation: AggregateOperations.COUNT,
                 aggregateFieldMetadataId: 'id',
                 primaryAxisGroupByFieldMetadataId: 'createdAt',
-                primaryAxisOrderBy: 'FIELD_ASC',
+                primaryAxisOrderBy: GraphOrderBy.FIELD_ASC,
                 displayDataLabel: false,
               },
               createdAt: new Date().toISOString(),
diff --git a/packages/twenty-server/src/modules/dashboard/chart-data/services/__tests__/line-chart-data.service.spec.ts b/packages/twenty-server/src/modules/dashboard/chart-data/services/__tests__/line-chart-data.service.spec.ts
index e0d29cf70d..840a67b64a 100644
--- a/packages/twenty-server/src/modules/dashboard/chart-data/services/__tests__/line-chart-data.service.spec.ts
+++ b/packages/twenty-server/src/modules/dashboard/chart-data/services/__tests__/line-chart-data.service.spec.ts
@@ -316,14 +316,14 @@ describe('LineChartDataService', () => {
         authContext: mockAuthContext,
       });
 
-      const stageA = result.series.find((s) => s.id === 'Stage A');
+      const stageA = result.series.find((s) => s.label === 'Stage A');
 
       expect(stageA?.data).toHaveLength(3);
       expect(stageA?.data[0].y).toBe(100);
       expect(stageA?.data[1].y).toBe(200);
       expect(stageA?.data[2].y).toBe(0);
 
-      const stageB = result.series.find((s) => s.id === 'Stage B');
+      const stageB = result.series.find((s) => s.label === 'Stage B');
 
       expect(stageB?.data).toHaveLength(3);
       expect(stageB?.data[0].y).toBe(150);
@@ -349,8 +349,8 @@ describe('LineChartDataService', () => {
         authContext: mockAuthContext,
       });
 
-      const seriesA = result.series.find((s) => s.id === 'A');
-      const seriesB = result.series.find((s) => s.id === 'B');
+      const seriesA = result.series.find((s) => s.label === 'A');
+      const seriesB = result.series.find((s) => s.label === 'B');
 
       expect(seriesA?.data[0].y).toBe(10);
       expect(seriesA?.data[1].y).toBe(30);
@@ -380,8 +380,8 @@ describe('LineChartDataService', () => {
         authContext: mockAuthContext,
       });
 
-      const seriesA = result.series.find((s) => s.id === 'A');
-      const seriesB = result.series.find((s) => s.id === 'B');
+      const seriesA = result.series.find((s) => s.label === 'A');
+      const seriesB = result.series.find((s) => s.label === 'B');
 
       expect(seriesA).toBeDefined();
       expect(seriesB).toBeDefined();
diff --git a/packages/twenty-server/src/modules/dashboard/chart-data/services/line-chart-data.service.ts b/packages/twenty-server/src/modules/dashboard/chart-data/services/line-chart-data.service.ts
index e66e33f0ba..f89c39d800 100644
--- a/packages/twenty-server/src/modules/dashboard/chart-data/services/line-chart-data.service.ts
+++ b/packages/twenty-server/src/modules/dashboard/chart-data/services/line-chart-data.service.ts
@@ -36,6 +36,7 @@ import { processOneDimensionalResults } from 'src/modules/dashboard/chart-data/u
 import { processTwoDimensionalResults } from 'src/modules/dashboard/chart-data/utils/process-two-dimensional-results.util';
 import { sortChartDataIfNeeded } from 'src/modules/dashboard/chart-data/utils/sort-chart-data-if-needed.util';
 import { sortSecondaryAxisData } from 'src/modules/dashboard/chart-data/utils/sort-secondary-axis-data.util';
+import { buildLineChartSeriesIdPrefix } from 'src/modules/dashboard/chart-data/utils/build-line-chart-series-id-prefix.util';
 
 type GetLineChartDataParams = {
   workspaceId: string;
@@ -164,6 +165,11 @@ export class LineChartDataService {
         secondaryAxisOrderBy: configuration.secondaryAxisOrderBy,
       });
 
+      const seriesIdPrefix = buildLineChartSeriesIdPrefix(
+        objectMetadataId,
+        configuration,
+      );
+
       if (isTwoDimensional && isDefined(secondaryAxisGroupByField)) {
         return this.transformToTwoDimensionalLineChartData({
           rawResults,
@@ -173,6 +179,7 @@ export class LineChartDataService {
           configuration,
           userTimezone,
           firstDayOfTheWeek,
+          seriesIdPrefix,
         });
       }
 
@@ -183,6 +190,7 @@ export class LineChartDataService {
         configuration,
         userTimezone,
         firstDayOfTheWeek,
+        seriesIdPrefix,
       });
     } catch (error) {
       if (error instanceof ChartDataException) {
@@ -206,6 +214,7 @@ export class LineChartDataService {
     configuration,
     userTimezone,
     firstDayOfTheWeek,
+    seriesIdPrefix,
   }: {
     rawResults: GroupByRawResult[];
     primaryAxisGroupByField: FlatFieldMetadata;
@@ -213,6 +222,7 @@ export class LineChartDataService {
     configuration: LineChartConfigurationDTO;
     userTimezone: string;
     firstDayOfTheWeek: CalendarStartDay;
+    seriesIdPrefix: string;
   }): LineChartDataOutputDTO {
     const filteredResults = configuration.omitNullValues
       ? rawResults.filter(
@@ -299,7 +309,7 @@ export class LineChartDataService {
 
     const series = [
       {
-        id: aggregateField.name,
+        id: `${seriesIdPrefix}${aggregateField.name}`,
         label: aggregateField.label,
         data: dataPoints,
       },
@@ -329,6 +339,7 @@ export class LineChartDataService {
     configuration,
     userTimezone,
     firstDayOfTheWeek,
+    seriesIdPrefix,
   }: {
     rawResults: GroupByRawResult[];
     primaryAxisGroupByField: FlatFieldMetadata;
@@ -337,6 +348,7 @@ export class LineChartDataService {
     configuration: LineChartConfigurationDTO;
     userTimezone: string;
     firstDayOfTheWeek: CalendarStartDay;
+    seriesIdPrefix: string;
   }): LineChartDataOutputDTO {
     const filteredResults = configuration.omitNullValues
       ? rawResults.filter(
@@ -491,6 +503,7 @@ export class LineChartDataService {
 
     const series = limitedSeriesIds.map((seriesId) => {
       const xToYMap = seriesMap.get(seriesId) ?? new Map();
+      const prefixedSeriesId = `${seriesIdPrefix}${seriesId}`;
 
       let dataPoints = filteredXValues.map((xValue) => ({
         x: xValue,
@@ -502,7 +515,7 @@ export class LineChartDataService {
       }
 
       return {
-        id: seriesId,
+        id: prefixedSeriesId,
         label: seriesId,
         data: dataPoints,
       };
@@ -522,6 +535,14 @@ export class LineChartDataService {
       ...secondaryFormattedToRawLookup,
     ]);
 
+    for (const seriesId of limitedSeriesIds) {
+      const rawValue = secondaryFormattedToRawLookup.get(seriesId);
+
+      if (isDefined(rawValue)) {
+        mergedLookup.set(`${seriesIdPrefix}${seriesId}`, rawValue);
+      }
+    }
+
     return {
       series,
       xAxisLabel,
diff --git a/packages/twenty-server/src/modules/dashboard/chart-data/utils/build-line-chart-series-id-prefix.util.ts b/packages/twenty-server/src/modules/dashboard/chart-data/utils/build-line-chart-series-id-prefix.util.ts
new file mode 100644
index 0000000000..b632736690
--- /dev/null
+++ b/packages/twenty-server/src/modules/dashboard/chart-data/utils/build-line-chart-series-id-prefix.util.ts
@@ -0,0 +1,17 @@
+import { createHash } from 'crypto';
+
+import type { LineChartConfigurationDTO } from 'src/engine/metadata-modules/page-layout-widget/dtos/line-chart-configuration.dto';
+
+export const buildLineChartSeriesIdPrefix = (
+  objectMetadataId: string,
+  configuration: LineChartConfigurationDTO,
+): string => {
+  const hash = createHash('sha256')
+    .update(objectMetadataId)
+    .update(':')
+    .update(JSON.stringify(configuration))
+    .digest('hex')
+    .slice(0, 16);
+
+  return `lc_${hash}:`;
+};