diff --git a/Koha/Account/Credit.pm b/Koha/Account/Credit.pm
index e3ffa39244..aed89932e2 100644
--- a/Koha/Account/Credit.pm
+++ b/Koha/Account/Credit.pm
@@ -48,6 +48,7 @@ sub to_api_mapping {
         borrowernumber    => 'patron_id',
         branchcode        => 'library_id',
         issue_id          => undef,
+        old_issue_id      => undef,
         itemnumber        => undef,
         manager_id        => 'user_id',
         note              => 'internal_note',
diff --git a/Koha/Account/Debit.pm b/Koha/Account/Debit.pm
index e48cd2bffa..b113003bda 100644
--- a/Koha/Account/Debit.pm
+++ b/Koha/Account/Debit.pm
@@ -48,6 +48,7 @@ sub to_api_mapping {
         borrowernumber    => 'patron_id',
         branchcode        => 'library_id',
         issue_id          => 'checkout_id',
+        old_issue_id      => 'old_checkout_id',
         itemnumber        => 'item_id',
         manager_id        => 'user_id',
         note              => 'internal_note',
diff --git a/Koha/Account/Line.pm b/Koha/Account/Line.pm
index 16752ff032..a82ad43414 100644
--- a/Koha/Account/Line.pm
+++ b/Koha/Account/Line.pm
@@ -982,6 +982,7 @@ sub to_api_mapping {
         borrowernumber    => 'patron_id',
         branchcode        => 'library_id',
         issue_id          => 'checkout_id',
+        old_issue_id      => 'old_checkout_id',
         itemnumber        => 'item_id',
         manager_id        => 'user_id',
         note              => 'internal_note',
diff --git a/api/v1/swagger/definitions/account_line.yaml b/api/v1/swagger/definitions/account_line.yaml
index cbf71f22b0..1fe078417c 100644
--- a/api/v1/swagger/definitions/account_line.yaml
+++ b/api/v1/swagger/definitions/account_line.yaml
@@ -24,6 +24,11 @@ properties:
       - integer
       - "null"
     description: Internal identifier for the checkout the account line is related to
+  old_checkout_id:
+    type:
+      - integer
+      - "null"
+    description: Internal identifier for the old checkout the account line is related to
   credit_number:
     type:
       - string
diff --git a/api/v1/swagger/definitions/debit.yaml b/api/v1/swagger/definitions/debit.yaml
index c3cc06096f..07ea7d7884 100644
--- a/api/v1/swagger/definitions/debit.yaml
+++ b/api/v1/swagger/definitions/debit.yaml
@@ -23,6 +23,11 @@ properties:
       - integer
       - "null"
     description: Internal identifier for the checkout the account line is related to
+  old_checkout_id:
+    type:
+      - integer
+      - "null"
+    description: Internal identifier for the old checkout the account line is related to
   date:
     type: string
     format: date-time
diff --git a/t/db_dependent/api/v1/patrons_accounts.t b/t/db_dependent/api/v1/patrons_accounts.t
index 6fbb726b7d..31d395ace6 100755
--- a/t/db_dependent/api/v1/patrons_accounts.t
+++ b/t/db_dependent/api/v1/patrons_accounts.t
@@ -90,7 +90,7 @@ subtest 'get_balance() tests' => sub {
     $debit_2->discard_changes;
 
     $t->get_ok("//$userid:$password@/api/v1/patrons/$patron_id/account")
-      ->status_is(200)->json_is(
+      ->status_is(200)->or(sub { diag $t->tx->res->body } )->json_is(
         {
             balance            => 100.01,
             outstanding_debits => {