diff --git a/packages/component-invite/src/routes/postAssignation.js b/packages/component-invite/src/routes/postAssignation.js
index 5829a21ed5f3c2da7e7edb7c56f21a577e839bea..54fa931fef694a06e51021a92e90188c4757a6d3 100644
--- a/packages/component-invite/src/routes/postAssignation.js
+++ b/packages/component-invite/src/routes/postAssignation.js
@@ -17,34 +17,22 @@ module.exports = models => async (req, res) => {
     return
   }
   const { collectionId } = req.params
-  const assignations = user.assignations.filter(
-    assignation => assignation.collectionId === collectionId,
+  const filteredAssignations = user.assignations.filter(
+    assignation =>
+      assignation.collectionId === collectionId && assignation.type === type,
   )
 
-  if (assignations.length === 0) {
+  if (filteredAssignations.length === 0) {
     res.status(400).json({
-      error: `Collection ${collectionId} does not match any user assignation`,
+      error: `Request data does not match any user assignation`,
     })
     logger.error(
-      `Collection ${collectionId} does not match any user assignation`,
-    )
-    return
-  }
-
-  const matchingAssignation = assignations[0]
-
-  if (type !== matchingAssignation.type) {
-    res.status(400).json({
-      error: 'User assignation type and provided type do not match',
-    })
-    logger.error(
-      `Param ${type} does not match user assignation type: ${
-        matchingAssignation.type
-      }`,
+      `Collection ${collectionId} and type '${type}' do not match any user assignation`,
     )
     return
   }
 
+  const matchingAssignation = filteredAssignations[0]
   try {
     await models.Collection.find(collectionId)
     // TODO: create a team and add the team id to the user's teams array
diff --git a/packages/component-invite/src/tests/fixtures/users.js b/packages/component-invite/src/tests/fixtures/users.js
index b918c91c60b44252d28d7750280dc3ffc4a5c616..b29fdee4fd9a82142361029799cddc591007efbe 100644
--- a/packages/component-invite/src/tests/fixtures/users.js
+++ b/packages/component-invite/src/tests/fixtures/users.js
@@ -1,3 +1,6 @@
+const collections = require('./collections')
+const { standardCollection } = collections
+
 const users = {
   admin: {
     type: 'user',
@@ -36,6 +39,7 @@ const users = {
         type: 'handlingEditor',
         hasAnswer: false,
         isAccepted: false,
+        collectionId: standardCollection.id,
       },
     ],
     save: jest.fn(() => users.handlingEditor),
diff --git a/packages/component-invite/src/tests/postAssignation.test.js b/packages/component-invite/src/tests/postAssignation.test.js
index a2e4dbd9be1de81560050c6fcd7004b24ffd9a6d..e148f3f34e2b5dbdcfad96083c187148a6b48285 100644
--- a/packages/component-invite/src/tests/postAssignation.test.js
+++ b/packages/component-invite/src/tests/postAssignation.test.js
@@ -48,6 +48,7 @@ describe('Post assignation route handler', () => {
       body,
     })
     req.user = acceptingHE
+    req.params.collectionId = standardCollection.id
     const res = httpMocks.createResponse()
     const models = buildModels(standardCollection, acceptingHE)
     await require(postAssignationPath)(models)(req, res)
@@ -66,6 +67,7 @@ describe('Post assignation route handler', () => {
       body,
     })
     req.user = refusingHE
+    req.params.collectionId = standardCollection.id
     const res = httpMocks.createResponse()
     const models = buildModels(standardCollection, refusingHE)
     await require(postAssignationPath)(models)(req, res)
@@ -82,6 +84,7 @@ describe('Post assignation route handler', () => {
       body,
     })
     req.user = handlingEditor
+    req.params.collectionId = standardCollection.id
     const res = httpMocks.createResponse()
     const models = buildModels(standardCollection, handlingEditor)
     await require(postAssignationPath)(models)(req, res)
@@ -99,6 +102,7 @@ describe('Post assignation route handler', () => {
       body,
     })
     req.user = handlingEditor
+    req.params.collectionId = standardCollection.id
     const res = httpMocks.createResponse()
     const models = buildModels(notFoundError, handlingEditor)
     await require(postAssignationPath)(models)(req, res)
@@ -118,6 +122,7 @@ describe('Post assignation route handler', () => {
     })
     delete noAssignationEditor.assignations
     req.user = noAssignationEditor
+    req.params.collectionId = standardCollection.id
     const res = httpMocks.createResponse()
     const models = buildModels(standardCollection, noAssignationEditor)
     await require(postAssignationPath)(models)(req, res)
@@ -126,4 +131,44 @@ describe('Post assignation route handler', () => {
     const data = JSON.parse(res._getData())
     expect(data.error).toEqual('The user has no assignation')
   })
+  it('should return an error when the request type the user assignation type do not match', async () => {
+    const body = {
+      type: 'aWrongType',
+      accept: false,
+    }
+    const req = httpMocks.createRequest({
+      body,
+    })
+    req.user = handlingEditor
+    req.params.collectionId = standardCollection.id
+    const res = httpMocks.createResponse()
+    const models = buildModels(standardCollection, handlingEditor)
+    await require(postAssignationPath)(models)(req, res)
+
+    expect(res.statusCode).toBe(400)
+    const data = JSON.parse(res._getData())
+    expect(data.error).toEqual(
+      'Request data does not match any user assignation',
+    )
+  })
+  it('should return an error when the request collection and the user assignation collection do not match', async () => {
+    const body = {
+      type: 'handlingEditor',
+      accept: false,
+    }
+    const req = httpMocks.createRequest({
+      body,
+    })
+    req.user = handlingEditor
+    req.params.collectionId = '123'
+    const res = httpMocks.createResponse()
+    const models = buildModels(standardCollection, handlingEditor)
+    await require(postAssignationPath)(models)(req, res)
+
+    expect(res.statusCode).toBe(400)
+    const data = JSON.parse(res._getData())
+    expect(data.error).toEqual(
+      'Request data does not match any user assignation',
+    )
+  })
 })