diff --git a/src/app/[locale]/incident/components/IncidentFormFooter.tsx b/src/app/[locale]/incident/components/IncidentFormFooter.tsx
index 36ac3f8..57b1267 100644
--- a/src/app/[locale]/incident/components/IncidentFormFooter.tsx
+++ b/src/app/[locale]/incident/components/IncidentFormFooter.tsx
@@ -6,14 +6,19 @@ import { useTranslations } from 'next-intl'
 import { Button } from '@/components/ui/Button'
 import { useStepperStore } from '@/store/stepper_store'
 import { steps, usePathname as usePath, useRouter } from '@/routing/navigation'
+import { ImSpinner8 } from 'react-icons/im'
 
 type IncidentFormFooterProps = {
   handleSignalSubmit?: () => void
+  loading?: boolean
+  ariaDescribedById?: string
 } & React.HTMLAttributes<HTMLDivElement>
 
 const IncidentFormFooter = ({
   className,
   handleSignalSubmit,
+  loading,
+  ariaDescribedById,
 }: IncidentFormFooterProps) => {
   const t = useTranslations('general.describe_form')
   const { step, addOneStep, removeOneStep } = useStepperStore()
@@ -56,12 +61,17 @@ const IncidentFormFooter = ({
           </Button>
         )}
         {step === 4 && (
+          // Note: current button has no visual indicator when disabled.
           <Button
             variant="primary"
             type="submit"
-            className="justify-self-end"
+            disabled={loading}
+            tabIndex={loading ? 0 : undefined}
+            aria-describedby={ariaDescribedById}
+            className="flex items-center gap-2 justify-self-end"
             onClick={() => (handleSignalSubmit ? handleSignalSubmit() : null)}
           >
+            {loading && <ImSpinner8 className="animate-spin" />}
             {t('submit_button')}
           </Button>
         )}
diff --git a/src/app/[locale]/incident/summary/components/IncidentSummaryForm.tsx b/src/app/[locale]/incident/summary/components/IncidentSummaryForm.tsx
index 49c4869..b5fed32 100644
--- a/src/app/[locale]/incident/summary/components/IncidentSummaryForm.tsx
+++ b/src/app/[locale]/incident/summary/components/IncidentSummaryForm.tsx
@@ -5,7 +5,7 @@ import { useTranslations } from 'next-intl'
 import { Divider } from '@/components/ui/Divider'
 import { LinkWrapper } from '@/components/ui/LinkWrapper'
 import { useStepperStore } from '@/store/stepper_store'
-import React, { useEffect } from 'react'
+import React, { useEffect, useState } from 'react'
 import { LocationMap } from '@/components/ui/LocationMap'
 import { signalsClient } from '@/services/client/api-client'
 import { useRouter } from '@/routing/navigation'
@@ -13,14 +13,16 @@ import { postAttachments } from '@/services/attachment/attachments'
 import { useFormStore } from '@/store/form_store'
 import { _NestedLocationModel } from '@/services/client'
 import { Paragraph, Heading } from '@/components/index'
-import { MAX_NUMBER_FILES } from '@/components/ui/upload/FileUpload'
 import PreviewFile from '@/components/ui/upload/PreviewFile'
+import { SubmitAlert } from '@/app/[locale]/incident/summary/components/SubmitAlert'
 
 const IncidentSummaryForm = () => {
   const t = useTranslations('describe-summary')
   const { formState } = useFormStore()
   const { goToStep } = useStepperStore()
   const router = useRouter()
+  const [error, setError] = useState<boolean>(false)
+  const [loading, setLoading] = useState<boolean>(false)
 
   useEffect(() => {
     router.prefetch('/incident/thankyou')
@@ -36,8 +38,11 @@ const IncidentSummaryForm = () => {
    * generated types with the real API requirements.
    */
   const handleSignalSubmit = async () => {
-    await signalsClient.v1
-      .v1PublicSignalsCreate({
+    setError(false)
+    setLoading(true)
+
+    try {
+      const res = await signalsClient.v1.v1PublicSignalsCreate({
         text: formState.description,
         // @ts-ignore
         location: {
@@ -62,21 +67,33 @@ const IncidentSummaryForm = () => {
         incident_date_start: new Date().toISOString(),
         extra_properties: formState.extra_properties,
       })
-      .then((res) => {
-        if (formState.attachments.length > 0) {
-          const signalId = res.signal_id
-          if (signalId) {
-            formState.attachments.forEach((attachment) => {
-              const formData = new FormData()
-              formData.append('signal_id', signalId)
-              formData.append('file', attachment)
-              postAttachments(signalId, formData)
-            })
+
+      if (formState.attachments.length > 0) {
+        const signalId = res.signal_id
+        if (signalId) {
+          try {
+            await Promise.all(
+              formState.attachments.map(async (attachment) => {
+                const formData = new FormData()
+                formData.append('signal_id', signalId)
+                formData.append('file', attachment)
+                return postAttachments(signalId, formData)
+              })
+            )
+          } catch (e) {
+            // Note: the report does not have fail when one or more of the attachments is not uploaded successfully.
+            console.error('One of the attachments failed while uploading', e)
           }
         }
-      })
-      .then((res) => router.push('/incident/thankyou'))
-      .catch((err) => console.error(err))
+      }
+
+      router.push('/incident/thankyou')
+    } catch (err) {
+      console.error(err)
+      setError(true)
+    } finally {
+      setLoading(false)
+    }
   }
 
   return (
@@ -163,7 +180,14 @@ const IncidentSummaryForm = () => {
           </>
         )}
       </div>
-      <IncidentFormFooter handleSignalSubmit={handleSignalSubmit} />
+
+      <SubmitAlert error={error} loading={loading} />
+
+      <IncidentFormFooter
+        handleSignalSubmit={handleSignalSubmit}
+        ariaDescribedById="submit-described-by"
+        loading={loading}
+      />
     </div>
   )
 }
diff --git a/src/app/[locale]/incident/summary/components/SubmitAlert.tsx b/src/app/[locale]/incident/summary/components/SubmitAlert.tsx
new file mode 100644
index 0000000..2efa92d
--- /dev/null
+++ b/src/app/[locale]/incident/summary/components/SubmitAlert.tsx
@@ -0,0 +1,50 @@
+import { useTranslations } from 'next-intl'
+import React, { useEffect, useRef } from 'react'
+import {
+  Alert,
+  Paragraph,
+} from '@utrecht/component-library-react/dist/css-module'
+import { Heading, MultilineData } from '@utrecht/component-library-react'
+
+export const SubmitAlert = ({
+  error,
+  loading,
+}: {
+  error: boolean
+  loading: boolean
+}) => {
+  const t = useTranslations('describe-summary')
+  const alertRef = useRef<HTMLDivElement | null>(null)
+  const multilineRef = useRef<HTMLPreElement>(null)
+
+  // Scroll to error message when an error occurs
+  useEffect(() => {
+    if ((error || loading) && alertRef.current) {
+      alertRef.current.scrollIntoView({ behavior: 'smooth', block: 'center' })
+    }
+  }, [error, loading])
+
+  if (loading) {
+    return (
+      <Alert ref={alertRef} id="submit-described-by">
+        <Heading level={3}>{t('submit_alert.loading.heading')}</Heading>
+        <MultilineData ref={multilineRef} className="pt-2">
+          {t('submit_alert.loading.description')}
+        </MultilineData>
+      </Alert>
+    )
+  }
+
+  if (error) {
+    return (
+      <Alert ref={alertRef} type="error" id="submit-described-by">
+        <Heading level={3}>{t('submit_alert.error.heading')}</Heading>
+        <Paragraph className="pt-2">
+          {t('submit_alert.error.description')}
+        </Paragraph>
+      </Alert>
+    )
+  }
+
+  return null
+}
diff --git a/src/services/attachment/attachments.ts b/src/services/attachment/attachments.ts
index 77dd834..db53419 100644
--- a/src/services/attachment/attachments.ts
+++ b/src/services/attachment/attachments.ts
@@ -16,6 +16,6 @@ export const postAttachments = async (
 
     return response.data
   } catch (error) {
-    throw new Error('Could not fetch suggested addresses. Please try again.')
+    throw new Error('Something went wrong uploading the attachment')
   }
 }
diff --git a/translations/en.json b/translations/en.json
index 2567e37..aefef84 100644
--- a/translations/en.json
+++ b/translations/en.json
@@ -78,6 +78,16 @@
         "input_sharing_heading": "Report sharing",
         "input_sharing_allowed": "Yes, I authorize the Municipality of Amsterdam to forward my report to other organizations if it is not intended for the municipality."
       }
+    },
+    "submit_alert": {
+      "error": {
+        "heading": "Submit failed",
+        "description": "Due to a technical error, the report could not be sent. We did not receive your information. Please try again in a few minutes."
+      },
+      "loading": {
+        "heading": "Processing",
+        "description": "Your report is being processed. You will automatically go to the next page once the report is received.\n\nPlease wait a moment...."
+      }
     }
   },
   "describe-thankyou": {
diff --git a/translations/nl.json b/translations/nl.json
index 7e157ca..54d98ab 100644
--- a/translations/nl.json
+++ b/translations/nl.json
@@ -78,6 +78,17 @@
         "input_sharing_heading": "Melding delen",
         "input_sharing_allowed": "Ja, ik geef de gemeente Amsterdam toestemming om mijn melding door te sturen naar andere organisaties als de melding niet voor de gemeente is bestemd."
       }
+    },
+    "submit_alert": {
+      "error": {
+        "heading": "Versturen mislukt",
+        "description": "Wegens een technische fout kon de melding niet worden verzonden. We hebben uw gegevens niet ontvangen. Probeer het over een paar minuten opnieuw."
+
+      },
+      "loading": {
+        "heading": "Bezig met afhandelen",
+        "description": "Uw melding wordt afgehandeld. U gaat automatisch naar de volgende pagina zodra de melding is ontvangen.\n\nEen ogenblik geduld alstublieft..."
+      }
     }
   },
   "describe-thankyou": {