diff --git a/frontend/app/src/domains/production/components/PackageLotConfigurator.tsx b/frontend/app/src/domains/production/components/PackageLotConfigurator.tsx
index 00ee3bb..bf11f61 100644
--- a/frontend/app/src/domains/production/components/PackageLotConfigurator.tsx
+++ b/frontend/app/src/domains/production/components/PackageLotConfigurator.tsx
@@ -10,17 +10,18 @@ import { FormContainer, TextFieldElement, TextareaAutosizeElement, useForm } fro
  * @returns 
  */
 export default function PackageLotConfigurator({ 
-    packageLot: packageLot, 
-    changeCallback: changeCallback,
-    disabled: disabled = false }) {
-    const [quantity, setQuantity] = useState<number>(packageLot.quantity)
+    lot: lot, 
+    disabled: disabled = false,
+    changeQuantitySoldCallback: changeQuantitySoldCallback }) {
+    
+    const [quantity, setQuantity] = useState<number>(lot.quantity)
     const [editionPopinOpen, setEditionPopinOpen] = useState<boolean>(false)
     const form = useForm({
         defaultValues: {
-            label: packageLot.label,
-            description: packageLot.description,
-            netWeight: packageLot.netWeight,
-            unitPrice: packageLot.unitPrice
+            label: lot.label,
+            description: lot.description,
+            netWeight: lot.netWeight,
+            unitPrice: lot.unitPrice
         }
     })
 
@@ -28,19 +29,19 @@ export default function PackageLotConfigurator({
         <div className="lot">
             <div className="lot__package">
                 <div className="lot__package__name">
-                    <span>{packageLot.label}</span>
+                    <span>{lot.label}</span>
                     {displayEditionButton()}
                 </div>
-                <div className="lot__package__description">{packageLot.description}</div>
-                <div className="lot__package__net-weight">{packageLot.netWeight} kg</div>
-                <div className="lot__package__unit-price">{packageLot.unitPrice} € <sup>TTC</sup>/kg</div>
+                <div className="lot__package__description">{lot.description}</div>
+                <div className="lot__package__net-weight">{lot.netWeight} kg</div>
+                <div className="lot__package__unit-price">{lot.unitPrice} € <sup>TTC</sup>/kg</div>
             </div>
             {displayRemovePackagesButtons()}
             <div className="lot__summary">
-                <div className="lot__summary__package-number">{quantity}</div>
+                <div className="lot__summary__package-number">{lot.quantity}</div>
                 <div className="lot__summary__label">colis mis en vente</div>
-                <div className="lot__summary__total-quantity">{quantity * packageLot.netWeight} kg</div>
-                <div className="lot__summary__total-price">{quantity * packageLot.netWeight * packageLot.unitPrice} € <sup>TTC</sup></div>
+                <div className="lot__summary__total-quantity">{lot.quantity * lot.netWeight} kg</div>
+                <div className="lot__summary__total-price">{lot.quantity * lot.netWeight * lot.unitPrice} € <sup>TTC</sup></div>
             </div>
             {displayAddPackagesButtons()}
         </div>
@@ -124,18 +125,18 @@ export default function PackageLotConfigurator({
      * @param {number} quantity 
      */
     function addPackages(quantity) {
-        packageLot.quantity += quantity
-        setQuantity(packageLot.quantity)
-        changeCallback(packageLot)
+        lot.quantity += quantity
+        changeQuantitySoldCallback()
+        setQuantity(lot.quantity)
     }
 
     /**
      * @param {number} quantity 
      */
     function removePackages(quantity) {
-        packageLot.quantity -= Math.min(quantity, packageLot.quantity)
-        setQuantity(packageLot.quantity)
-        changeCallback(packageLot)
+        lot.quantity -= Math.min(quantity, lot.quantity)
+        changeQuantitySoldCallback()
+        setQuantity(lot.quantity)
     }
 
     function openEditionPopin() {
@@ -148,20 +149,19 @@ export default function PackageLotConfigurator({
 
     function cancelForm(formData) {
         form.reset({
-            label: packageLot.label,
-            description: packageLot.description,
-            netWeight: packageLot.netWeight,
-            unitPrice: packageLot.unitPrice
+            label: lot.label,
+            description: lot.description,
+            netWeight: lot.netWeight,
+            unitPrice: lot.unitPrice
         })
         closeEditionPopin()
     }
 
     function validForm(formData) {
-        packageLot.label = formData.label
-        packageLot.description = formData.description
-        packageLot.unitPrice = formData.unitPrice
-        packageLot.netWeight = formData.netWeight
-        changeCallback(packageLot)
+        lot.label = formData.label
+        lot.description = formData.description
+        lot.unitPrice = formData.unitPrice
+        lot.netWeight = formData.netWeight
         closeEditionPopin()
     }
 
diff --git a/frontend/app/src/domains/production/views/PackageLotsCreator.tsx b/frontend/app/src/domains/production/views/PackageLotsCreator.tsx
index 868dc07..144d07f 100644
--- a/frontend/app/src/domains/production/views/PackageLotsCreator.tsx
+++ b/frontend/app/src/domains/production/views/PackageLotsCreator.tsx
@@ -1,55 +1,36 @@
-import React from 'react'
-import { useEffect, useState } from "react"
-import { useKeycloak } from '@react-keycloak/web'
-import { ApiBuilder } from '../../../api/ApiBuilder.ts'
-import PackageLot from "viandeendirect_eu/dist/model/PackageLot"
+import React, { useState } from 'react'
 import PackageLotConfigurator from "../components/PackageLotConfigurator.tsx"
+import { BeefProductionService } from '../service/BeefProductionService.ts'
+import { Alert } from '@mui/material'
 
 
-export default function PackageLotsCreator({ 
-    production: production, 
-    changeProductionCallback: changeProductionCallback,
-    disabled: disabled = false }) {
+export default function PackageLotsCreator({
+    production: production,
+    disabled: disabled = false,
+    changeQuantitiesCompliancyCallback: changeQuantitiesCompliancyCallback = (isCompliant) => {}}) {
 
-    const { keycloak } = useKeycloak()
-    const apiBuilder = new ApiBuilder()
+    return <>
+        {displayAlerts()}
+        {production.lots?.map(lot => <PackageLotConfigurator
+            lot={lot}
+            disabled={disabled}
+            changeQuantitySoldCallback={changeQuantitySold} />)}
+    </>
 
-    useEffect(() => {
-        if (!production.lots) {
-            apiBuilder.getAuthenticatedApi(keycloak).then(api => {
-                apiBuilder.invokeAuthenticatedApi(() => {
-                    api.getPackageTemplates((error, data, response) => {
-                        if (error) {
-                            console.error(error);
-                        } else {
-                            console.log('api.getPackageTemplates called successfully. Returned data: ' + data);
-                            const lots = []
-                            data.map(template => {
-                                let lot = new PackageLot()
-                                lot.label = template.label
-                                lot.description = template.description
-                                lot.unitPrice = template.unitPrice
-                                lot.netWeight = template.netWeight
-                                lot.quantity = 0
-                                lot.quantitySold = 0
-                                lots.push(lot)
-                            })
-                            changeProductionCallback({ ...production, lots: lots })
-                        }
-                    })
-                }, keycloak)
-            })
+    function displayAlerts() {
+        const totalQuantitySold = production.lots?.map(lot => lot.netWeight * lot.quantity).reduce((total, added) => total + added) || 0
+        if (!isTotalQuantitySoldLowerThanMeatWeight(totalQuantitySold)) {
+            const meatQuantity = BeefProductionService.getMeatWeight(production.warmCarcassWeight)
+            return <Alert severity="error">Le poids total des produits préparés ne doit pas dépasser la quantité de viande de l'animal estimée à {meatQuantity} kg.</Alert>
         }
-    }, [keycloak])
+    }
 
-    return <>
-        {production.lots?.map(lot => <PackageLotConfigurator 
-            packageLot={lot} 
-            changeCallback={changeLotConfiguration}
-            disabled={disabled}/>)}
-    </>
+    function isTotalQuantitySoldLowerThanMeatWeight(totalQuantitySoldUpdated) {
+        return totalQuantitySoldUpdated < BeefProductionService.getMeatWeight(production.warmCarcassWeight)
+    }
 
-    function changeLotConfiguration() {
-        changeProductionCallback({ ...production })
+    function changeQuantitySold() {
+        const totalQuantitySold = production.lots?.map(lot => lot.netWeight * lot.quantity).reduce((total, added) => total + added) || 0
+        changeQuantitiesCompliancyCallback(isTotalQuantitySoldLowerThanMeatWeight(totalQuantitySold))
     }
 }
diff --git a/frontend/app/src/domains/production/views/beefProduction/BeefProductionCreator.tsx b/frontend/app/src/domains/production/views/beefProduction/BeefProductionCreator.tsx
index b0bfb5d..eae0d8b 100644
--- a/frontend/app/src/domains/production/views/beefProduction/BeefProductionCreator.tsx
+++ b/frontend/app/src/domains/production/views/beefProduction/BeefProductionCreator.tsx
@@ -1,22 +1,19 @@
-import React from "react"
+import React, { useEffect } from "react"
 import { useState } from "react"
-
-import { Button, ButtonGroup, Typography, Stepper, Step, StepContent, StepButton, Alert } from "@mui/material"
-
+import { useForm } from "react-hook-form"
+import dayjs from "dayjs"
 import 'dayjs/locale/fr'
-
-import BeefProduction from "viandeendirect_eu/dist/model/BeefProduction.js"
-
-import { ApiBuilder } from '../../../../api/ApiBuilder.ts'
 import { useKeycloak } from '@react-keycloak/web'
 
+import { Button, ButtonGroup, Typography, Stepper, Step, StepContent, StepButton, Alert } from "@mui/material"
+import { ApiBuilder } from '../../../../api/ApiBuilder.ts'
 import PackageLotsCreator from "../PackageLotsCreator.tsx"
 import {BreedingPropertiesForm, mapBreedingFormDataToBeefProduction as mapBreedingFormDataToBeefProduction} from "./forms/BreedingPropertiesForm.tsx"
 import SlaughterPropertiesForm, { mapSlaughterFormDataToBeefProduction } from "./forms/SlaughterPropertiesForm.tsx"
 import CuttingPropertiesForm, { mapCuttingFormDataToBeefProduction } from "./forms/CuttingPropertiesForm.tsx"
 import { BeefProductionService } from "../../service/BeefProductionService.ts"
-import { useForm } from "react-hook-form"
-import dayjs from "dayjs"
+import BeefProduction from "viandeendirect_eu/dist/model/BeefProduction.js"
+import PackageLot from "viandeendirect_eu/dist/model/PackageLot.js"
 
 export default function BeefProductionCreator({ callback }) {
 
@@ -28,9 +25,34 @@ export default function BeefProductionCreator({ callback }) {
     const { keycloak } = useKeycloak()
     const [ activeStep, setActiveStep ] = useState<number>(BREEDING_PROPERTIES_STEP)
     const [ beefProduction, setBeefProduction] = useState<BeefProduction>({ productionType: "BeefProduction"})
-    const [completedSteps, setCompletedSteps] = useState<Array<number>>([])
+    const [ completedSteps, setCompletedSteps] = useState<Array<number>>([])
     const apiBuilder = new ApiBuilder()
 
+    useEffect(() => {
+        if (! beefProduction.lots) {
+            apiBuilder.getAuthenticatedApi(keycloak).then(api => {
+                apiBuilder.invokeAuthenticatedApi(() => {
+                    api.getPackageTemplates((error, data, response) => {
+                        if (error) {
+                            console.error(error);
+                        } else {
+                            console.log('api.getPackageTemplates called successfully. Returned data: ' + data);
+                            const lots: Array<PackageLot> = []
+                            data.map(template => {
+                                lots.push({
+                                    ...template,
+                                    quantity: 0,
+                                    quantitySold: 0
+                                })
+                            })
+                            setBeefProduction({...beefProduction, lots: lots})
+                        }
+                    })
+                }, keycloak)
+            })
+        }
+    }, [keycloak])
+
     const breedingPropertiesForm = useForm<BeefProduction>({defaultValues: {
         ...beefProduction,
         birthDate: beefProduction.birthDate ? dayjs(beefProduction.birthDate) : undefined
@@ -95,9 +117,8 @@ export default function BeefProductionCreator({ callback }) {
                     <StepButton onClick={() => setActiveStep(PRODUCTS_STEP)}>Produits préparés</StepButton>
                     <StepContent>
                         <div className="form">
-                            {displayAlerts()}
                             <div>
-                                <PackageLotsCreator production={beefProduction} changeProductionCallback={setBeefProduction}></PackageLotsCreator>
+                                <PackageLotsCreator production={beefProduction}></PackageLotsCreator>
                             </div>
                             <div>
                                 <ButtonGroup>
@@ -129,12 +150,6 @@ export default function BeefProductionCreator({ callback }) {
         setActiveStep(PRODUCTS_STEP)
     }
 
-    function displayAlerts() {
-        if(!isTotalQuantitySoldLowerThanMeatWeight()) {
-            const meatQuantity = BeefProductionService.getMeatWeight(beefProduction.warmCarcassWeight)
-            return <Alert severity="error">Le poids total des produits préparés ne doit pas dépasser la quantité de viande de l'animal estimée à {meatQuantity} kg.</Alert>
-        }
-    }
 
     function isTotalQuantitySoldLowerThanMeatWeight() {
         return getTotalQuantitySold() < BeefProductionService.getMeatWeight(beefProduction.warmCarcassWeight)
diff --git a/frontend/app/src/domains/production/views/beefProduction/BeefProductionView.tsx b/frontend/app/src/domains/production/views/beefProduction/BeefProductionView.tsx
index df27340..c47dfb7 100644
--- a/frontend/app/src/domains/production/views/beefProduction/BeefProductionView.tsx
+++ b/frontend/app/src/domains/production/views/beefProduction/BeefProductionView.tsx
@@ -1,11 +1,11 @@
-import { Typography, ButtonGroup, Button, Tab, Tabs } from '@mui/material'
 import React from 'react'
 import { useState } from 'react'
+import { useForm } from 'react-hook-form'
+import { Typography, ButtonGroup, Button, Tab, Tabs } from '@mui/material'
+import dayjs from 'dayjs'
 import BreedingPropertiesForm, { mapBreedingFormDataToBeefProduction } from './forms/BreedingPropertiesForm.tsx'
 import SlaughterPropertiesForm, { mapSlaughterFormDataToBeefProduction } from './forms/SlaughterPropertiesForm.tsx'
 import CuttingPropertiesForm, { mapCuttingFormDataToBeefProduction } from './forms/CuttingPropertiesForm.tsx'
-import { useForm } from 'react-hook-form'
-import dayjs from 'dayjs'
 import BeefProduction from "viandeendirect_eu/dist/model/BeefProduction.js"
 import PackageLotsCreator from '../PackageLotsCreator.tsx'
 
@@ -16,9 +16,13 @@ export default function BeefProductionView({ beefProduction: beefProduction, bac
     const CUTTING_PROPERTIES_TAB = 2
     const PRODUCTS_TAB = 3
 
-    const [currentTab, setCurrentTab] = useState<number>(BREEDING_PROPERTIES_TAB);
+    const [currentTab, setCurrentTab] = useState<number>(BREEDING_PROPERTIES_TAB)
     const [readOnly, setReadOnly] = useState<boolean>(true)
-    const [production, setProduction] = useState<BeefProduction>(beefProduction)
+    const [production, setProduction] = useState<BeefProduction>(
+        {...beefProduction,
+            lots: beefProduction.lots ? beefProduction.lots.map((lot) => {return {...lot}}) : undefined
+        })
+    const [saveEnabled, setSaveEnabled] = useState<boolean>(true)
 
     const changeTab = (event: React.SyntheticEvent, newValue: number) => {
         setCurrentTab(newValue);
@@ -26,17 +30,17 @@ export default function BeefProductionView({ beefProduction: beefProduction, bac
 
     const breedingPropertiesForm = useForm<BeefProduction>({defaultValues: {
         ...beefProduction,
-        birthDate: beefProduction.birthDate ? dayjs(beefProduction.birthDate) : undefined
+        birthDate: production.birthDate ? dayjs(production.birthDate) : undefined
     }})
 
     const slaughterPropertiesForm = useForm<BeefProduction>({defaultValues: {
-        ...beefProduction,
-        slaughterDate: beefProduction.slaughterDate ? dayjs(beefProduction.slaughterDate) : undefined
+        ...production,
+        slaughterDate: production.slaughterDate ? dayjs(production.slaughterDate) : undefined
     }})
 
     const cuttingPropertiesForm = useForm<BeefProduction>({defaultValues: {
-        ...beefProduction,
-        cuttingDate: beefProduction.cuttingDate ? dayjs(beefProduction.cuttingDate) : undefined
+        ...production,
+        cuttingDate: production.cuttingDate ? dayjs(production.cuttingDate) : undefined
     }})
 
     return <>
@@ -69,12 +73,11 @@ export default function BeefProductionView({ beefProduction: beefProduction, bac
             </div>
             <div hidden={currentTab !== 3}>
                 <div>
-                    <PackageLotsCreator 
+                    <PackageLotsCreator
                         production={production} 
-                        changeProductionCallback={setProduction}
-                        disabled={readOnly}/>
+                        disabled={readOnly}
+                        changeQuantitiesCompliancyCallback={setSaveEnabled}/>
                 </div>
-
             </div>
             {getButtons()}
     </>
@@ -87,7 +90,7 @@ export default function BeefProductionView({ beefProduction: beefProduction, bac
             </ButtonGroup>
         }
         return <ButtonGroup>
-                <Button variant="contained" size="small" onClick={saveUpdate()} >Sauvegarder</Button>
+                <Button variant="contained" size="small" onClick={saveUpdate()} disabled={!saveEnabled}>Sauvegarder</Button>
                 <Button variant="outlined" size="small" onClick={cancelUpdate} >Abandonner</Button>
             </ButtonGroup>
     }
@@ -112,7 +115,6 @@ export default function BeefProductionView({ beefProduction: beefProduction, bac
             case PRODUCTS_TAB:
                 return () => {
                     setReadOnly(true) 
-                    //setProduction()
                 }
         }
     }
@@ -126,15 +128,23 @@ export default function BeefProductionView({ beefProduction: beefProduction, bac
                 })
             case SLAUGHTER_PROPERTIES_TAB:
                 return slaughterPropertiesForm.reset(() => {
-                    setProduction(beefProduction)
+                    setProduction({...beefProduction,
+                        lots: beefProduction.lots ? beefProduction.lots.map((lot) => {return {...lot}}) : undefined
+                    })
                     setReadOnly(true)
                 })
             case CUTTING_PROPERTIES_TAB:
                 return cuttingPropertiesForm.reset(() => {
-                    setProduction(beefProduction)
+                    setProduction({...beefProduction,
+                        lots: beefProduction.lots ? beefProduction.lots.map((lot) => {return {...lot}}) : undefined
+                    })
                     setReadOnly(true)
                 })
             case PRODUCTS_TAB:
+                setProduction({...beefProduction,
+                    lots: beefProduction.lots ? beefProduction.lots.map((lot) => {return {...lot}}) : undefined
+                })
+                setSaveEnabled(true)
                 setReadOnly(true) 
         }
     }