diff --git a/pkg/error/validation.go b/pkg/error/validation.go
index 6140443..360e40b 100644
--- a/pkg/error/validation.go
+++ b/pkg/error/validation.go
@@ -3,13 +3,18 @@ package error
 import "fmt"
 
 const (
-	UserIDIsEmpty       = "anthrovePostID cannot be empty"
-	UserIDToShort       = "anthrovePostID needs to be 25 characters long"
-	SourceIDEmpty       = "anthroveSourceID cannot be empty"
-	SourceIDToShort     = "anthroveSourceID needs to be 25 characters long"
-	UserSourceIDEmpty   = "anthroveUserSourceID cannot be empty"
-	UserSourceIDToShort = "anthroveUserSourceID needs to be 25 characters long"
-	TagIDEmpty          = "tagID cannot be empty"
+	UserIDIsEmpty           = "PostID cannot be empty"
+	UserIDToShort           = "PostID needs to be 25 characters long"
+	SourceIDEmpty           = "SourceID cannot be empty"
+	SourceIDToShort         = "SourceID needs to be 25 characters long"
+	UserSourceIDEmpty       = "UserSourceID cannot be empty"
+	UserSourceIDToShort     = "UserSourceID needs to be 25 characters long"
+	TagIDEmpty              = "tagID cannot be empty"
+	UserFavoriteListIsEmpty = "userFavoriteList cannot be empty"
+	UserFavoriteIDIsEmpty   = "userFavoriteID cannot be empty"
+	UserFavoriteIDToShort   = "UserFavoriteID needs to be 25 characters long"
+
+	BatchSizeIsEmpty = "batchSize cannot be empty"
 )
 
 type EntityValidationFailed struct {