diff --git a/backend/src/graphql/resolver/AdminResolver.ts b/backend/src/graphql/resolver/AdminResolver.ts
index 12cad529c..84ae09cf8 100644
--- a/backend/src/graphql/resolver/AdminResolver.ts
+++ b/backend/src/graphql/resolver/AdminResolver.ts
@@ -54,11 +54,11 @@ import {
   updateCreations,
 } from './util/creations'
 import {
-  CONTRIBUTIONLINK_MEMO_MAX_CHARS,
-  CONTRIBUTIONLINK_MEMO_MIN_CHARS,
   CONTRIBUTIONLINK_NAME_MAX_CHARS,
   CONTRIBUTIONLINK_NAME_MIN_CHARS,
   FULL_CREATION_AVAILABLE,
+  MEMO_MAX_CHARS,
+  MEMO_MIN_CHARS,
 } from './const/const'
 
 // const EMAIL_OPT_IN_REGISTER = 1
@@ -595,11 +595,8 @@ export class AdminResolver {
       logger.error(`The memo must be initialized!`)
       throw new Error(`The memo must be initialized!`)
     }
-    if (
-      memo.length < CONTRIBUTIONLINK_MEMO_MIN_CHARS ||
-      memo.length > CONTRIBUTIONLINK_MEMO_MAX_CHARS
-    ) {
-      const msg = `The value of 'memo' with a length of ${memo.length} did not fulfill the requested bounderies min=${CONTRIBUTIONLINK_MEMO_MIN_CHARS} and max=${CONTRIBUTIONLINK_MEMO_MAX_CHARS}`
+    if (memo.length < MEMO_MIN_CHARS || memo.length > MEMO_MAX_CHARS) {
+      const msg = `The value of 'memo' with a length of ${memo.length} did not fulfill the requested bounderies min=${MEMO_MIN_CHARS} and max=${MEMO_MAX_CHARS}`
       logger.error(`${msg}`)
       throw new Error(`${msg}`)
     }
diff --git a/backend/src/graphql/resolver/ContributionResolver.test.ts b/backend/src/graphql/resolver/ContributionResolver.test.ts
index b584624c2..20f11ff9a 100644
--- a/backend/src/graphql/resolver/ContributionResolver.test.ts
+++ b/backend/src/graphql/resolver/ContributionResolver.test.ts
@@ -66,6 +66,42 @@ describe('ContributionResolver', () => {
       })
 
       describe('input not valid', () => {
+        it('throws error when memo length smaller than 5 chars', async () => {
+          const date = new Date()
+          await expect(
+            mutate({
+              mutation: createContribution,
+              variables: {
+                amount: 100.0,
+                memo: 'Test',
+                creationDate: date.toString(),
+              },
+            }),
+          ).resolves.toEqual(
+            expect.objectContaining({
+              errors: [new GraphQLError('memo text is too short (5 characters minimum)')],
+            }),
+          )
+        })
+
+        it('throws error when memo length greater than 255 chars', async () => {
+          const date = new Date()
+          await expect(
+            mutate({
+              mutation: createContribution,
+              variables: {
+                amount: 100.0,
+                memo: 'Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test',
+                creationDate: date.toString(),
+              },
+            }),
+          ).resolves.toEqual(
+            expect.objectContaining({
+              errors: [new GraphQLError('memo text is too long (255 characters maximum)')],
+            }),
+          )
+        })
+
         it('throws error when creationDate not-valid', async () => {
           await expect(
             mutate({
@@ -313,6 +349,48 @@ describe('ContributionResolver', () => {
         })
       })
 
+      describe('Memo length smaller than 5 chars', () => {
+        it('throws error', async () => {
+          const date = new Date()
+          await expect(
+            mutate({
+              mutation: updateContribution,
+              variables: {
+                contributionId: result.data.createContribution.id,
+                amount: 100.0,
+                memo: 'Test',
+                creationDate: date.toString(),
+              },
+            }),
+          ).resolves.toEqual(
+            expect.objectContaining({
+              errors: [new GraphQLError('memo text is too short (5 characters minimum)')],
+            }),
+          )
+        })
+      })
+
+      describe('Memo length greater than 255 chars', () => {
+        it('throws error', async () => {
+          const date = new Date()
+          await expect(
+            mutate({
+              mutation: updateContribution,
+              variables: {
+                contributionId: result.data.createContribution.id,
+                amount: 100.0,
+                memo: 'Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test Test',
+                creationDate: date.toString(),
+              },
+            }),
+          ).resolves.toEqual(
+            expect.objectContaining({
+              errors: [new GraphQLError('memo text is too long (255 characters maximum)')],
+            }),
+          )
+        })
+      })
+
       describe('wrong user tries to update the contribution', () => {
         beforeAll(async () => {
           await query({
diff --git a/backend/src/graphql/resolver/ContributionResolver.ts b/backend/src/graphql/resolver/ContributionResolver.ts
index ef4467a71..a22715fb4 100644
--- a/backend/src/graphql/resolver/ContributionResolver.ts
+++ b/backend/src/graphql/resolver/ContributionResolver.ts
@@ -11,6 +11,7 @@ import { Contribution, ContributionListResult } from '@model/Contribution'
 import { UnconfirmedContribution } from '@model/UnconfirmedContribution'
 import { User } from '@model/User'
 import { validateContribution, getUserCreation, updateCreations } from './util/creations'
+import { MEMO_MAX_CHARS, MEMO_MIN_CHARS } from './const/const'
 
 @Resolver()
 export class ContributionResolver {
@@ -20,6 +21,16 @@ export class ContributionResolver {
     @Args() { amount, memo, creationDate }: ContributionArgs,
     @Ctx() context: Context,
   ): Promise<UnconfirmedContribution> {
+    if (memo.length > MEMO_MAX_CHARS) {
+      logger.error(`memo text is too long: memo.length=${memo.length} > (${MEMO_MAX_CHARS}`)
+      throw new Error(`memo text is too long (${MEMO_MAX_CHARS} characters maximum)`)
+    }
+
+    if (memo.length < MEMO_MIN_CHARS) {
+      logger.error(`memo text is too short: memo.length=${memo.length} < (${MEMO_MIN_CHARS}`)
+      throw new Error(`memo text is too short (${MEMO_MIN_CHARS} characters minimum)`)
+    }
+
     const user = getUser(context)
     const creations = await getUserCreation(user.id)
     logger.trace('creations', creations)
@@ -119,6 +130,16 @@ export class ContributionResolver {
     @Args() { amount, memo, creationDate }: ContributionArgs,
     @Ctx() context: Context,
   ): Promise<UnconfirmedContribution> {
+    if (memo.length > MEMO_MAX_CHARS) {
+      logger.error(`memo text is too long: memo.length=${memo.length} > (${MEMO_MAX_CHARS}`)
+      throw new Error(`memo text is too long (${MEMO_MAX_CHARS} characters maximum)`)
+    }
+
+    if (memo.length < MEMO_MIN_CHARS) {
+      logger.error(`memo text is too short: memo.length=${memo.length} < (${MEMO_MIN_CHARS}`)
+      throw new Error(`memo text is too short (${MEMO_MIN_CHARS} characters minimum)`)
+    }
+
     const user = getUser(context)
 
     const contributionToUpdate = await dbContribution.findOne({
diff --git a/backend/src/graphql/resolver/TransactionResolver.ts b/backend/src/graphql/resolver/TransactionResolver.ts
index 023e5b2ff..bc062a1f4 100644
--- a/backend/src/graphql/resolver/TransactionResolver.ts
+++ b/backend/src/graphql/resolver/TransactionResolver.ts
@@ -34,9 +34,7 @@ import { virtualLinkTransaction, virtualDecayTransaction } from '@/util/virtualT
 import Decimal from 'decimal.js-light'
 
 import { BalanceResolver } from './BalanceResolver'
-
-const MEMO_MAX_CHARS = 255
-const MEMO_MIN_CHARS = 5
+import { MEMO_MAX_CHARS, MEMO_MIN_CHARS } from './const/const'
 
 export const executeTransaction = async (
   amount: Decimal,
diff --git a/backend/src/graphql/resolver/const/const.ts b/backend/src/graphql/resolver/const/const.ts
index d5ba08784..e4eb9a13b 100644
--- a/backend/src/graphql/resolver/const/const.ts
+++ b/backend/src/graphql/resolver/const/const.ts
@@ -8,5 +8,5 @@ export const FULL_CREATION_AVAILABLE = [
 ]
 export const CONTRIBUTIONLINK_NAME_MAX_CHARS = 100
 export const CONTRIBUTIONLINK_NAME_MIN_CHARS = 5
-export const CONTRIBUTIONLINK_MEMO_MAX_CHARS = 255
-export const CONTRIBUTIONLINK_MEMO_MIN_CHARS = 5
+export const MEMO_MAX_CHARS = 255
+export const MEMO_MIN_CHARS = 5