diff --git a/backend/src/main/java/at/ac/tuwien/sepr/groupphase/backend/repository/BeerPongTableRepository.java b/backend/src/main/java/at/ac/tuwien/sepr/groupphase/backend/repository/BeerPongTableRepository.java
index 43dbd7e..8d9ec2d 100644
--- a/backend/src/main/java/at/ac/tuwien/sepr/groupphase/backend/repository/BeerPongTableRepository.java
+++ b/backend/src/main/java/at/ac/tuwien/sepr/groupphase/backend/repository/BeerPongTableRepository.java
@@ -10,4 +10,21 @@ public interface BeerPongTableRepository extends JpaRepository<BeerPongTable, Lo
     List<BeerPongTable> findAllByTournamentId(long tournamentId);
 
     List<BeerPongTable> findByTournamentIdAndCurrentMatchIsNull(long tournamentId);
+
+    /**
+     * Check if a table with the given name already exists.
+     *
+     * @param name of the table
+     * @return wether the table with the given name exists
+     */
+    Boolean existsByName(String name);
+
+    /**
+     * Check if a table with the given name already exists, whose id isn't the same as the parameters.
+     *
+     * @param name of the table
+     * @param id of the table that should't be matched
+     * @return wether the table with the given name exists
+     */
+    Boolean existsByNameAndIdNot(String name, Long id);
 }
diff --git a/backend/src/main/java/at/ac/tuwien/sepr/groupphase/backend/service/impl/BeerPongTableServiceImpl.java b/backend/src/main/java/at/ac/tuwien/sepr/groupphase/backend/service/impl/BeerPongTableServiceImpl.java
index b0e7f87..2837209 100644
--- a/backend/src/main/java/at/ac/tuwien/sepr/groupphase/backend/service/impl/BeerPongTableServiceImpl.java
+++ b/backend/src/main/java/at/ac/tuwien/sepr/groupphase/backend/service/impl/BeerPongTableServiceImpl.java
@@ -52,6 +52,14 @@ public class BeerPongTableServiceImpl implements BeerPongTableService {
             throw new AccessDeniedException("Current user isn't organizer of tournament.");
         }
 
+        if (beerPongTableRepository.existsByName(beerPongTable.getName())) {
+            LOGGER.debug(
+                    "Couldn't create beer pong table for tournament with id {}, because a table with the name '{}' already exists.",
+                    beerPongTable.getTournamentId(),
+                    beerPongTable.getName());
+            throw new PreconditionFailedException("Beer pong table with name already exists.");
+        }
+
         var entity = new BeerPongTable(beerPongTable.getName(), tournament);
 
         beerPongTableRepository.save(entity);
@@ -85,6 +93,14 @@ public class BeerPongTableServiceImpl implements BeerPongTableService {
             throw new AccessDeniedException("Current user isn't organizer of tournament.");
         }
 
+        if (beerPongTableRepository.existsByNameAndIdNot(beerPongTable.getName(), beerPongTableId)) {
+            LOGGER.debug(
+                    "Couldn't update beer pong table with id {}, because a table with the name '{}' already exists.",
+                    beerPongTableId,
+                    beerPongTable.getName());
+            throw new PreconditionFailedException("Beer pong table with name already exists.");
+        }
+
         entity.setName(beerPongTable.getName());
         beerPongTableRepository.save(entity);
 
diff --git a/frontend/src/app/components/beer-pong-table-create/beer-pong-table-create.component.ts b/frontend/src/app/components/beer-pong-table-create/beer-pong-table-create.component.ts
index 617538b..470f341 100644
--- a/frontend/src/app/components/beer-pong-table-create/beer-pong-table-create.component.ts
+++ b/frontend/src/app/components/beer-pong-table-create/beer-pong-table-create.component.ts
@@ -85,7 +85,9 @@ export class BeerPongTableCreateComponent implements OnInit {
         },
         error: async (er: HttpErrorResponse) => {
           this.snackBar.open(
-            `There was a problem creating the beer pong table: ${await er.error.text()}`,
+            typeof er.error === 'string'
+              ? er.error
+              : `There was a problem creating the beer pong table: ${await er.error.text()}`,
             'Close',
             { duration: 3000 },
           );
diff --git a/frontend/src/app/components/beer-pong-table-update/beer-pong-table-update.component.ts b/frontend/src/app/components/beer-pong-table-update/beer-pong-table-update.component.ts
index 31fe7bb..bbc46f3 100644
--- a/frontend/src/app/components/beer-pong-table-update/beer-pong-table-update.component.ts
+++ b/frontend/src/app/components/beer-pong-table-update/beer-pong-table-update.component.ts
@@ -89,7 +89,9 @@ export class BeerPongTableUpdateComponent implements OnInit {
           },
           error: async (er: HttpErrorResponse) => {
             this.snackBar.open(
-              `There was a problem creating the beer pong table: ${await er.error.text()}`,
+              typeof er.error === 'string'
+                ? er.error
+                : `There was a problem creating the beer pong table: ${await er.error.text()}`,
               'Close',
               { duration: 3000 },
             );