diff --git a/components/Alert/index.tsx b/components/Alert/index.tsx
index a9564424..8315495d 100644
--- a/components/Alert/index.tsx
+++ b/components/Alert/index.tsx
@@ -23,7 +23,11 @@ const Alert = (props: Props) => {
         <AlertDialog.Overlay className="Overlay" onClick={props.cancelAction} />
         <div className="AlertWrapper">
           <AlertDialog.Content className="Alert">
-            {props.title ? <AlertDialog.Title>Error</AlertDialog.Title> : ''}
+            {props.title ? (
+              <AlertDialog.Title>{props.title}</AlertDialog.Title>
+            ) : (
+              ''
+            )}
             <AlertDialog.Description className="description">
               {props.message}
             </AlertDialog.Description>
diff --git a/components/CharacterGrid/index.tsx b/components/CharacterGrid/index.tsx
index f0b59039..46c5348c 100644
--- a/components/CharacterGrid/index.tsx
+++ b/components/CharacterGrid/index.tsx
@@ -2,8 +2,9 @@
 import React, { useCallback, useEffect, useMemo, useState } from 'react'
 import { getCookie } from 'cookies-next'
 import { useSnapshot } from 'valtio'
+import { useTranslation } from 'next-i18next'
 
-import { AxiosResponse } from 'axios'
+import { AxiosError, AxiosResponse } from 'axios'
 import debounce from 'lodash.debounce'
 
 import Alert from '~components/Alert'
@@ -31,12 +32,19 @@ const CharacterGrid = (props: Props) => {
   // Constants
   const numCharacters: number = 5
 
+  // Localization
+  const { t } = useTranslation('common')
+
   // Cookies
   const cookie = getCookie('account')
   const accountData: AccountCookie = cookie
     ? JSON.parse(cookie as string)
     : null
 
+  // Set up state for error handling
+  const [axiosError, setAxiosError] = useState<AxiosResponse>()
+  const [errorAlertOpen, setErrorAlertOpen] = useState(false)
+
   // Set up state for view management
   const { party, grid } = useSnapshot(appState)
   const [slug, setSlug] = useState()
@@ -111,7 +119,15 @@ const CharacterGrid = (props: Props) => {
       if (party.editable)
         saveCharacter(party.id, character, position)
           .then((response) => handleCharacterResponse(response.data))
-          .catch((error) => console.error(error))
+          .catch((error) => {
+            const axiosError = error as AxiosError
+            const response = axiosError.response
+
+            if (response) {
+              setErrorAlertOpen(true)
+              setAxiosError(response)
+            }
+          })
     }
   }
 
@@ -482,6 +498,19 @@ const CharacterGrid = (props: Props) => {
   }
 
   // Render: JSX components
+  const errorAlert = () => {
+    console.log(axiosError?.status)
+    return (
+      <Alert
+        open={errorAlertOpen}
+        title={axiosError ? `${axiosError.status}` : 'Error'}
+        message={t(`errors.${axiosError?.statusText.toLowerCase()}`)}
+        cancelAction={() => setErrorAlertOpen(false)}
+        cancelActionText={t('buttons.confirm')}
+      />
+    )
+  }
+
   return (
     <div>
       <Alert
@@ -526,6 +555,7 @@ const CharacterGrid = (props: Props) => {
           })}
         </ul>
       </div>
+      {errorAlert()}
     </div>
   )
 }
diff --git a/components/SummonGrid/index.tsx b/components/SummonGrid/index.tsx
index 0da1200e..e612409e 100644
--- a/components/SummonGrid/index.tsx
+++ b/components/SummonGrid/index.tsx
@@ -4,9 +4,10 @@ import { getCookie } from 'cookies-next'
 import { useSnapshot } from 'valtio'
 import { useTranslation } from 'next-i18next'
 
-import { AxiosResponse } from 'axios'
+import { AxiosError, AxiosResponse } from 'axios'
 import debounce from 'lodash.debounce'
 
+import Alert from '~components/Alert'
 import SummonUnit from '~components/SummonUnit'
 import ExtraSummons from '~components/ExtraSummons'
 
@@ -38,6 +39,10 @@ const SummonGrid = (props: Props) => {
   // Localization
   const { t } = useTranslation('common')
 
+  // Set up state for error handling
+  const [axiosError, setAxiosError] = useState<AxiosResponse>()
+  const [errorAlertOpen, setErrorAlertOpen] = useState(false)
+
   // Set up state for view management
   const { party, grid } = useSnapshot(appState)
   const [slug, setSlug] = useState()
@@ -100,12 +105,12 @@ const SummonGrid = (props: Props) => {
         saveSummon(party.id, summon, position)
           .then((response) => handleSummonResponse(response.data))
           .catch((error) => {
-            const code = error.response.status
-            const data = error.response.data
-            if (code === 422) {
-              if (data.code === 'incompatible_summon_for_position') {
-                // setShowIncompatibleAlert(true)
-              }
+            const axiosError = error as AxiosError
+            const response = axiosError.response
+
+            if (response) {
+              setErrorAlertOpen(true)
+              setAxiosError(response)
             }
           })
     }
@@ -380,6 +385,19 @@ const SummonGrid = (props: Props) => {
   }
 
   // Render: JSX components
+  const errorAlert = () => {
+    console.log(axiosError?.status)
+    return (
+      <Alert
+        open={errorAlertOpen}
+        title={axiosError ? `${axiosError.status}` : 'Error'}
+        message={t(`errors.${axiosError?.statusText.toLowerCase()}`)}
+        cancelAction={() => setErrorAlertOpen(false)}
+        cancelActionText={t('buttons.confirm')}
+      />
+    )
+  }
+
   const mainSummonElement = (
     <div className="LabeledUnit">
       <div className="Label">{t('summons.main')}</div>
@@ -460,6 +478,7 @@ const SummonGrid = (props: Props) => {
       </div>
 
       {subAuraSummonElement}
+      {errorAlert()}
     </div>
   )
 }
diff --git a/components/WeaponGrid/index.tsx b/components/WeaponGrid/index.tsx
index b32b442e..06af305d 100644
--- a/components/WeaponGrid/index.tsx
+++ b/components/WeaponGrid/index.tsx
@@ -4,7 +4,7 @@ import { getCookie } from 'cookies-next'
 import { useSnapshot } from 'valtio'
 import { useTranslation } from 'next-i18next'
 
-import { AxiosResponse } from 'axios'
+import { AxiosError, AxiosResponse } from 'axios'
 import debounce from 'lodash.debounce'
 
 import Alert from '~components/Alert'
@@ -41,11 +41,15 @@ const WeaponGrid = (props: Props) => {
     ? JSON.parse(cookie as string)
     : null
 
+  // Set up state for error handling
+  const [axiosError, setAxiosError] = useState<AxiosResponse>()
+  const [errorAlertOpen, setErrorAlertOpen] = useState(false)
+  const [showIncompatibleAlert, setShowIncompatibleAlert] = useState(false)
+
   // Set up state for view management
   const { party, grid } = useSnapshot(appState)
   const [slug, setSlug] = useState()
   const [modalOpen, setModalOpen] = useState(false)
-  const [showIncompatibleAlert, setShowIncompatibleAlert] = useState(false)
 
   // Set up state for conflict management
   const [incoming, setIncoming] = useState<Weapon>()
@@ -100,11 +104,21 @@ const WeaponGrid = (props: Props) => {
         saveWeapon(party.id, weapon, position)
           .then((response) => handleWeaponResponse(response.data))
           .catch((error) => {
-            const code = error.response.status
-            const data = error.response.data
-            if (code === 422) {
-              if (data.code === 'incompatible_weapon_for_position') {
+            const axiosError = error as AxiosError
+            const response = axiosError.response
+
+            if (response) {
+              const code = response.status
+              const data = response.data
+
+              if (
+                code === 422 &&
+                data.code === 'incompatible_weapon_for_position'
+              ) {
                 setShowIncompatibleAlert(true)
+              } else {
+                setErrorAlertOpen(true)
+                setAxiosError(response)
               }
             }
           })
@@ -362,16 +376,30 @@ const WeaponGrid = (props: Props) => {
         cancelAction={() => setShowIncompatibleAlert(!showIncompatibleAlert)}
         cancelActionText={t('buttons.confirm')}
         message={t('alert.incompatible_weapon')}
-      ></Alert>
+      />
     ) : (
       ''
     )
   }
 
+  const errorAlert = () => {
+    console.log(axiosError?.status)
+    return (
+      <Alert
+        open={errorAlertOpen}
+        title={axiosError ? `${axiosError.status}` : 'Error'}
+        message={t(`errors.${axiosError?.statusText.toLowerCase()}`)}
+        cancelAction={() => setErrorAlertOpen(false)}
+        cancelActionText={t('buttons.confirm')}
+      />
+    )
+  }
+
   return (
     <div id="WeaponGrid">
       {conflicts ? conflictModal() : ''}
       {incompatibleAlert()}
+      {errorAlert()}
       <div id="MainGrid">
         {mainhandElement}
         <ul id="Weapons">{weaponGridElement}</ul>
diff --git a/public/locales/en/common.json b/public/locales/en/common.json
index 89fc5b77..1754ed94 100644
--- a/public/locales/en/common.json
+++ b/public/locales/en/common.json
@@ -51,6 +51,9 @@
     },
     "remove": "Remove from grid"
   },
+  "errors": {
+    "unauthorized": "You don't have permission to perform that action"
+  },
   "filters": {
     "labels": {
       "element": "Element",
diff --git a/public/locales/ja/common.json b/public/locales/ja/common.json
index 5faa47b8..305251b1 100644
--- a/public/locales/ja/common.json
+++ b/public/locales/ja/common.json
@@ -59,6 +59,9 @@
       "rarity": "レアリティ"
     }
   },
+  "errors": {
+    "unauthorized": "行ったアクションを実行する権限がありません"
+  },
   "header": {
     "anonymous": "無名",
     "untitled_team": "{{username}}さんからの無題編成",