diff --git a/core/src/database/mutation/parent.rs b/core/src/database/mutation/parent.rs
index 51b1fae..b31b269 100644
--- a/core/src/database/mutation/parent.rs
+++ b/core/src/database/mutation/parent.rs
@@ -15,6 +15,12 @@ impl Mutation {
         .await
     }
 
+    pub async fn delete_parent(db: &DbConn, parent: Model) -> Result<DeleteResult, DbErr> {
+        parent
+            .delete(db)
+            .await
+    }
+
     pub async fn add_parent_details(
         db: &DbConn,
         parent: Model,
diff --git a/core/src/models/candidate_details.rs b/core/src/models/candidate_details.rs
index 3f41344..579b9e1 100644
--- a/core/src/models/candidate_details.rs
+++ b/core/src/models/candidate_details.rs
@@ -237,7 +237,6 @@ impl From<&parent::Model> for EncryptedParentDetails {
             telephone: EncryptedString::try_from(&parent.telephone).ok(),
             email: EncryptedString::try_from(&parent.email).ok(),
         }
-        
     }
 }
 
diff --git a/core/src/services/candidate_service.rs b/core/src/services/candidate_service.rs
index cd53f9e..0ca5e75 100644
--- a/core/src/services/candidate_service.rs
+++ b/core/src/services/candidate_service.rs
@@ -10,35 +10,8 @@ use crate::{
     Mutation, Query, models::{candidate::{BaseCandidateResponse, CreateCandidateResponse}, auth::AuthenticableTrait}, utils::db::get_recipients,
 };
 
-use super::{session_service::SessionService, application_service::ApplicationService, portfolio_service::PortfolioService};
+use super::{session_service::SessionService, portfolio_service::PortfolioService};
 
-// TODO validation
-
-/* pub struct FieldOfStudy {
-    pub short_name: String,
-    pub full_name: String,
-    pub code: i32,
-}
-
-impl FieldOfStudy {
-    pub fn new(short_name: String, full_name: String, code: i32) -> Self {
-        Self {
-            short_name,
-            full_name,
-            code,
-        }
-    }
-
-    pub fn code_str(&self) -> String {
-        format!("{:04}", self.code)
-    }
-}
-
-pub enum FieldsOfStudy {
-    KB(FieldOfStudy),
-    IT(FieldOfStudy),
-    G(FieldOfStudy),
-} */
 
 const FIELD_OF_STUDY_PREFIXES: [&str; 3] = ["101", "102", "103"];
 
@@ -136,17 +109,15 @@ impl CandidateService {
             .decrypt(admin_private_key).await?;
         let enc_details = EncryptedApplicationDetails::new(&dec_details, recipients).await?;
 
-        let candidate = Mutation::add_candidate_details(db, candidate, enc_details.candidate).await?;
+        Mutation::add_candidate_details(db, candidate, enc_details.candidate).await?;
         for i in 0..enc_details.parents.len() {
             Mutation::add_parent_details(db, parents[i].clone(), enc_details.parents[i].clone()).await?;
         }
 
-        let details = ApplicationService::decrypt_all_details(priv_key_plain_text, db, candidate).await?;
-
         Ok(
             CreateCandidateResponse {
                 application_id: id,
-                personal_id_number: personal_id_number,
+                personal_id_number,
                 password: new_password_plain,
             }
         )
diff --git a/core/src/services/parent_service.rs b/core/src/services/parent_service.rs
index c3710f6..be2b2f5 100644
--- a/core/src/services/parent_service.rs
+++ b/core/src/services/parent_service.rs
@@ -22,10 +22,11 @@ impl ParentService {
         parents_details: &Vec<ParentDetails>,
         recipients: &Vec<String>,
     ) -> Result<Vec<parent::Model>, ServiceError> {
-        let found_parents = Query::find_candidate_parents(db, ref_candidate).await?;
-        if found_parents.len() > 2 {
+        if parents_details.len() > 2 {
             return Err(ServiceError::ParentOverflow);
         }
+        
+        let found_parents = Query::find_candidate_parents(db, ref_candidate).await?;
 
         let mut result = vec![];
         for i in 0..parents_details.len() {
@@ -38,6 +39,11 @@ impl ParentService {
             result.push(parent);
         }
 
+        // delete parents that are not in the form
+        for i in parents_details.len()..found_parents.len() {
+            Mutation::delete_parent(db, found_parents[i].to_owned()).await?;
+        }
+
         Ok(result)
     }
 }