diff --git a/application/Espo/EntryPoints/Attachment.php b/application/Espo/EntryPoints/Attachment.php
index ab9f296b8d..5eb4ef88fe 100644
--- a/application/Espo/EntryPoints/Attachment.php
+++ b/application/Espo/EntryPoints/Attachment.php
@@ -55,7 +55,7 @@ class Attachment implements EntryPoint
         $id = $request->getQueryParam('id');
 
         if (!$id) {
-            throw new BadRequest();
+            throw new BadRequest("No id.");
         }
 
         $attachment = $this->entityManager
@@ -63,15 +63,15 @@ class Attachment implements EntryPoint
             ->getById($id);
 
         if (!$attachment) {
-            throw new NotFound();
+            throw new NotFound("Attachment not found.");
         }
 
         if (!$this->acl->checkEntity($attachment)) {
-            throw new Forbidden();
+            throw new Forbidden("No access to attachment.");
         }
 
         if (!$this->fileStorageManager->exists($attachment)) {
-            throw new NotFound();
+            throw new NotFound("File not found.");
         }
 
         $fileType = $attachment->getType();
diff --git a/application/Espo/EntryPoints/ChangePassword.php b/application/Espo/EntryPoints/ChangePassword.php
index b1ca89f145..d8ce7bf8c1 100644
--- a/application/Espo/EntryPoints/ChangePassword.php
+++ b/application/Espo/EntryPoints/ChangePassword.php
@@ -54,7 +54,7 @@ class ChangePassword implements EntryPoint
         $requestId = $request->getQueryParam('id');
 
         if (!$requestId) {
-            throw new BadRequest();
+            throw new BadRequest("No request ID.");
         }
 
         $passwordChangeRequest = $this->entityManager
diff --git a/application/Espo/EntryPoints/ConfirmOptIn.php b/application/Espo/EntryPoints/ConfirmOptIn.php
index edd60caea6..6799d96e34 100644
--- a/application/Espo/EntryPoints/ConfirmOptIn.php
+++ b/application/Espo/EntryPoints/ConfirmOptIn.php
@@ -65,7 +65,7 @@ class ConfirmOptIn implements EntryPoint
         $id = $request->getQueryParam('id');
 
         if (!$id) {
-            throw new BadRequest();
+            throw new BadRequest("No id.");
         }
 
         $result = $this->service->confirmOptIn($id);
diff --git a/application/Espo/EntryPoints/Download.php b/application/Espo/EntryPoints/Download.php
index 6fa6411c75..0a1fc20f58 100644
--- a/application/Espo/EntryPoints/Download.php
+++ b/application/Espo/EntryPoints/Download.php
@@ -55,22 +55,22 @@ class Download implements EntryPoint
         $id = $request->getQueryParam('id');
 
         if (!$id) {
-            throw new BadRequest();
+            throw new BadRequest("No id.");
         }
 
         /** @var ?AttachmentEntity $attachment */
         $attachment = $this->entityManager->getEntityById(AttachmentEntity::ENTITY_TYPE, $id);
 
         if (!$attachment) {
-            throw new NotFoundSilent();
+            throw new NotFoundSilent("Attachment not found.");
         }
 
         if (!$this->acl->checkEntity($attachment)) {
-            throw new Forbidden();
+            throw new Forbidden("No access to attachment.");
         }
 
         if ($attachment->isBeingUploaded()) {
-            throw new Forbidden();
+            throw new Forbidden("Attachment is being uploaded.");
         }
 
         $stream = $this->fileStorageManager->getStream($attachment);
diff --git a/application/Espo/EntryPoints/Image.php b/application/Espo/EntryPoints/Image.php
index 9c532f5621..0679db2804 100644
--- a/application/Espo/EntryPoints/Image.php
+++ b/application/Espo/EntryPoints/Image.php
@@ -72,7 +72,7 @@ class Image implements EntryPoint
         $size = $request->getQueryParam('size') ?? null;
 
         if (!$id) {
-            throw new BadRequest();
+            throw new BadRequest("No id.");
         }
 
         $this->show($response, $id, $size);
@@ -90,7 +90,7 @@ class Image implements EntryPoint
         $attachment = $this->entityManager->getEntityById(Attachment::ENTITY_TYPE, $id);
 
         if (!$attachment) {
-            throw new NotFoundSilent();
+            throw new NotFoundSilent("Attachment not found.");
         }
 
         if (!$disableAccessCheck && !$this->acl->checkEntity($attachment)) {
@@ -105,13 +105,13 @@ class Image implements EntryPoint
 
         if ($this->allowedRelatedTypeList) {
             if (!in_array($attachment->getRelatedType(), $this->allowedRelatedTypeList)) {
-                throw new NotFoundSilent();
+                throw new NotFoundSilent("Not allowed related type.");
             }
         }
 
         if ($this->allowedFieldList) {
             if (!in_array($attachment->getTargetField(), $this->allowedFieldList)) {
-                throw new NotFoundSilent();
+                throw new NotFoundSilent("Not allowed field.");
             }
         }
 
@@ -175,7 +175,7 @@ class Image implements EntryPoint
         $filePath = $this->getAttachmentRepository()->getFilePath($attachment);
 
         if (!$this->fileManager->isFile($filePath)) {
-            throw new NotFound();
+            throw new NotFound("File not found.");
         }
 
         $fileType = $attachment->getType() ?? '';
diff --git a/application/Espo/EntryPoints/LogoImage.php b/application/Espo/EntryPoints/LogoImage.php
index 815ae32e99..da6aabeda8 100644
--- a/application/Espo/EntryPoints/LogoImage.php
+++ b/application/Espo/EntryPoints/LogoImage.php
@@ -51,7 +51,7 @@ class LogoImage extends Image
         }
 
         if (!$id) {
-            throw new NotFound();
+            throw new NotFound("No id.");
         }
 
         $this->show($response, $id, $size);
diff --git a/application/Espo/EntryPoints/Pdf.php b/application/Espo/EntryPoints/Pdf.php
index a469f0a7f1..551017c4a3 100644
--- a/application/Espo/EntryPoints/Pdf.php
+++ b/application/Espo/EntryPoints/Pdf.php
@@ -57,15 +57,19 @@ class Pdf implements EntryPoint
         $templateId = $request->getQueryParam('templateId');
 
         if (!$entityId || !$entityType || !$templateId) {
-            throw new BadRequest();
+            throw new BadRequest("No entityId or entityType or templateId.");
         }
 
         $entity = $this->entityManager->getEntityById($entityType, $entityId);
         /** @var ?Template $template */
         $template = $this->entityManager->getEntityById(Template::ENTITY_TYPE, $templateId);
 
-        if (!$entity || !$template) {
-            throw new NotFound();
+        if (!$entity) {
+            throw new NotFound("Record not found.");
+        }
+
+        if (!$template) {
+            throw new NotFound("Template not found.");
         }
 
         $contents = $this->service->generate($entityType, $entityId, $templateId);
diff --git a/application/Espo/Modules/Crm/Controllers/Call.php b/application/Espo/Modules/Crm/Controllers/Call.php
index 8363e87c02..bc3c02c247 100644
--- a/application/Espo/Modules/Crm/Controllers/Call.php
+++ b/application/Espo/Modules/Crm/Controllers/Call.php
@@ -82,7 +82,7 @@ class Call extends Record
         $id = $request->getParsedBody()->id ?? null;
 
         if (!$id) {
-            throw new BadRequest();
+            throw new BadRequest("No id.");
         }
 
         $invitees = $this->fetchInvitees($request);
@@ -108,21 +108,21 @@ class Call extends Record
         }
 
         if (!is_array($targets)) {
-            throw new BadRequest();
+            throw new BadRequest("No targets.");
         }
 
         $invitees = [];
 
         foreach ($targets as $target) {
             if (!$target instanceof stdClass) {
-                throw new BadRequest();
+                throw new BadRequest("Bad target.");
             }
 
             $targetEntityType = $target->entityType ?? null;
             $targetId = $target->id ?? null;
 
             if (!is_string($targetEntityType) || !is_string($targetId)) {
-                throw new BadRequest();
+                throw new BadRequest("No entityType or id.");
             }
 
             $invitees[] = new Invitee($targetEntityType, $targetId);
@@ -179,7 +179,7 @@ class Call extends Record
         $data = $request->getParsedBody();
 
         if (empty($data->id) || empty($data->status)) {
-            throw new BadRequest();
+            throw new BadRequest("No id or status.");
         }
 
         $this->injectableFactory
@@ -199,7 +199,7 @@ class Call extends Record
         $id = $request->getRouteParam('id');
 
         if (!$id) {
-            throw new BadRequest();
+            throw new BadRequest("No id.");
         }
 
         $collection = $this->injectableFactory
diff --git a/application/Espo/Modules/Crm/Controllers/Meeting.php b/application/Espo/Modules/Crm/Controllers/Meeting.php
index bb91d8642e..03ab7d1aec 100644
--- a/application/Espo/Modules/Crm/Controllers/Meeting.php
+++ b/application/Espo/Modules/Crm/Controllers/Meeting.php
@@ -61,7 +61,7 @@ class Meeting extends Record
         $id = $request->getParsedBody()->id ?? null;
 
         if (!$id) {
-            throw new BadRequest();
+            throw new BadRequest("No id.");
         }
 
         $invitees = $this->fetchInvitees($request);
@@ -85,7 +85,7 @@ class Meeting extends Record
         $id = $request->getParsedBody()->id ?? null;
 
         if (!$id) {
-            throw new BadRequest();
+            throw new BadRequest("No id.");
         }
 
         $invitees = $this->fetchInvitees($request);
@@ -111,21 +111,21 @@ class Meeting extends Record
         }
 
         if (!is_array($targets)) {
-            throw new BadRequest();
+            throw new BadRequest("No targets.");
         }
 
         $invitees = [];
 
         foreach ($targets as $target) {
             if (!$target instanceof stdClass) {
-                throw new BadRequest();
+                throw new BadRequest("Bad target.");
             }
 
             $targetEntityType = $target->entityType ?? null;
             $targetId = $target->id ?? null;
 
             if (!is_string($targetEntityType) || !is_string($targetId)) {
-                throw new BadRequest();
+                throw new BadRequest("No entityType or id.");
             }
 
             $invitees[] = new Invitee($targetEntityType, $targetId);
@@ -182,7 +182,7 @@ class Meeting extends Record
         $data = $request->getParsedBody();
 
         if (empty($data->id) || empty($data->status)) {
-            throw new BadRequest();
+            throw new BadRequest("No id or status.");
         }
 
         $this->injectableFactory
@@ -202,7 +202,7 @@ class Meeting extends Record
         $id = $request->getRouteParam('id');
 
         if (!$id) {
-            throw new BadRequest();
+            throw new BadRequest("No id.");
         }
 
         $collection = $this->injectableFactory
diff --git a/application/Espo/Modules/Crm/EntryPoints/CampaignTrackOpened.php b/application/Espo/Modules/Crm/EntryPoints/CampaignTrackOpened.php
index 36ff432e43..a28afaf378 100644
--- a/application/Espo/Modules/Crm/EntryPoints/CampaignTrackOpened.php
+++ b/application/Espo/Modules/Crm/EntryPoints/CampaignTrackOpened.php
@@ -59,16 +59,16 @@ class CampaignTrackOpened implements EntryPoint
         $id = $request->getQueryParam('id');
 
         if (!$id || !is_string($id)) {
-            throw new BadRequest();
+            throw new BadRequest("No id.");
         }
 
         $queueItemId = $id;
 
         /** @var ?EmailQueueItem $queueItem */
-        $queueItem = $this->entityManager->getEntity(EmailQueueItem::ENTITY_TYPE, $queueItemId);
+        $queueItem = $this->entityManager->getEntityById(EmailQueueItem::ENTITY_TYPE, $queueItemId);
 
         if (!$queueItem) {
-            throw new NotFound();
+            throw new NotFound("Item not found.");
         }
 
         $targetType = $queueItem->getTargetType();
diff --git a/application/Espo/Modules/Crm/EntryPoints/CampaignUrl.php b/application/Espo/Modules/Crm/EntryPoints/CampaignUrl.php
index 0a8f205c90..c13e520da1 100644
--- a/application/Espo/Modules/Crm/EntryPoints/CampaignUrl.php
+++ b/application/Espo/Modules/Crm/EntryPoints/CampaignUrl.php
@@ -73,14 +73,14 @@ class CampaignUrl implements EntryPoint
         $uid = $request->getQueryParam('uid') ?? null;
 
         if (!$trackingUrlId || !is_string($trackingUrlId)) {
-            throw new BadRequest();
+            throw new BadRequest("No tracking URL ID.");
         }
 
         /** @var ?CampaignTrackingUrl $trackingUrl */
         $trackingUrl = $this->entityManager->getEntityById(CampaignTrackingUrl::ENTITY_TYPE, $trackingUrlId);
 
         if (!$trackingUrl) {
-            throw new NotFoundSilent("Tracking URL '{$trackingUrlId}' not found.");
+            throw new NotFoundSilent("Tracking URL '$trackingUrlId' not found.");
         }
 
         if ($emailAddress && $hash) {
@@ -91,14 +91,14 @@ class CampaignUrl implements EntryPoint
         }
         else {
             if (!$queueItemId || !is_string($queueItemId)) {
-                throw new BadRequest();
+                throw new BadRequest("No item ID.");
             }
 
             /** @var ?EmailQueueItem $queueItem */
             $queueItem = $this->entityManager->getEntityById(EmailQueueItem::ENTITY_TYPE, $queueItemId);
 
             if (!$queueItem) {
-                throw new NotFoundSilent();
+                throw new NotFoundSilent("Item not found.");
             }
 
             $this->processWithQueueItem($trackingUrl, $queueItem);
diff --git a/application/Espo/Modules/Crm/EntryPoints/EventConfirmation.php b/application/Espo/Modules/Crm/EntryPoints/EventConfirmation.php
index ca3f62520f..08c41dc7b1 100644
--- a/application/Espo/Modules/Crm/EntryPoints/EventConfirmation.php
+++ b/application/Espo/Modules/Crm/EntryPoints/EventConfirmation.php
@@ -76,11 +76,11 @@ class EventConfirmation implements EntryPoint
         $action = $request->getQueryParam('action') ?? null;
 
         if (!$uid) {
-            throw new BadRequest();
+            throw new BadRequest("No uid.");
         }
 
         if (!in_array($action, [self::ACTION_ACCEPT, self::ACTION_DECLINE, self::ACTION_TENTATIVE])) {
-            throw new BadRequest();
+            throw new BadRequest("Bad action.");
         }
 
         /** @var ?UniqueId $uniqueId */
@@ -112,11 +112,11 @@ class EventConfirmation implements EntryPoint
             $link;
 
         if (!$toProcess) {
-            throw new Error();
+            throw new Error("Bad data.");
         }
 
         if ($sentDateStart !== null && !is_string($sentDateStart)) {
-            throw new Error();
+            throw new Error("No date in data.");
         }
 
         $event = $this->entityManager->getEntityById($eventType, $eventId);
diff --git a/application/Espo/Modules/Crm/EntryPoints/SubscribeAgain.php b/application/Espo/Modules/Crm/EntryPoints/SubscribeAgain.php
index aa2d9d9292..fa863d8e90 100644
--- a/application/Espo/Modules/Crm/EntryPoints/SubscribeAgain.php
+++ b/application/Espo/Modules/Crm/EntryPoints/SubscribeAgain.php
@@ -81,7 +81,7 @@ class SubscribeAgain implements EntryPoint
         }
 
         if (!$id || !is_string($id)) {
-            throw new BadRequest();
+            throw new BadRequest("No id.");
         }
 
         $queueItemId = $id;
@@ -90,7 +90,7 @@ class SubscribeAgain implements EntryPoint
         $queueItem = $this->entityManager->getEntity(EmailQueueItem::ENTITY_TYPE, $queueItemId);
 
         if (!$queueItem) {
-            throw new NotFound();
+            throw new NotFound("No item.");
         }
 
         $campaign = null;
@@ -116,7 +116,7 @@ class SubscribeAgain implements EntryPoint
             $target = $this->entityManager->getEntityById($targetType, $targetId);
 
             if (!$target) {
-                throw new NotFound();
+                throw new NotFound("Record not found.");
             }
 
             if ($massEmail->get('optOutEntirely')) {
diff --git a/application/Espo/Modules/Crm/EntryPoints/Unsubscribe.php b/application/Espo/Modules/Crm/EntryPoints/Unsubscribe.php
index d0328cdaa6..a3469fbfc9 100644
--- a/application/Espo/Modules/Crm/EntryPoints/Unsubscribe.php
+++ b/application/Espo/Modules/Crm/EntryPoints/Unsubscribe.php
@@ -84,7 +84,7 @@ class Unsubscribe implements EntryPoint
         }
 
         if (!$id) {
-            throw new BadRequest();
+            throw new BadRequest("No id.");
         }
 
         $queueItemId = $id;
@@ -93,7 +93,7 @@ class Unsubscribe implements EntryPoint
         $queueItem = $this->entityManager->getEntityById(EmailQueueItem::ENTITY_TYPE, $queueItemId);
 
         if (!$queueItem) {
-            throw new NotFound();
+            throw new NotFound("No item.");
         }
 
         $campaign = null;
diff --git a/application/Espo/Tools/Stream/Api/PostFollowers.php b/application/Espo/Tools/Stream/Api/PostFollowers.php
index dc62454f51..7aa1fcad45 100644
--- a/application/Espo/Tools/Stream/Api/PostFollowers.php
+++ b/application/Espo/Tools/Stream/Api/PostFollowers.php
@@ -56,11 +56,11 @@ class PostFollowers implements Action
         $data = $request->getParsedBody();
 
         if (!$entityType || !$id) {
-            throw new BadRequest();
+            throw new BadRequest("No entityType or id.");
         }
 
         if (!$this->acl->check($entityType)) {
-            throw new Forbidden();
+            throw new Forbidden("No access to $entityType.");
         }
 
         $ids = $data->ids ?? (isset($data->id) ? [$data->id] : []);