diff --git a/code/API_definitions/carrier_billing.yaml b/code/API_definitions/carrier_billing.yaml
index 2008795..a1ed250 100644
--- a/code/API_definitions/carrier_billing.yaml
+++ b/code/API_definitions/carrier_billing.yaml
@@ -1023,7 +1023,7 @@ components:
       properties:
         id:
           type: string
-          description: |- 
+          description: |-
             Unique payment item identifier. Relevant to uniquely identify an item within a given payment when `paymentDetails` are provided and also to correlate information when a refund regarding this item is performed, by means of using `refundDetails`.
           example: "3goug3uvu32v3b"
         amount:
diff --git a/code/API_definitions/carrier_billing_refund.yaml b/code/API_definitions/carrier_billing_refund.yaml
index ebcd6fc..789ad4b 100644
--- a/code/API_definitions/carrier_billing_refund.yaml
+++ b/code/API_definitions/carrier_billing_refund.yaml
@@ -672,7 +672,7 @@ components:
       properties:
         paymentItemId:
           type: string
-          description: |- 
+          description: |-
             Unique payment item identifier to which this refund item is related to. Relevant when indicating `refundDetails` to correlate information for a refund regarding this `paymentItemId`.
           example: "3goug3uvu32v3b"
         amount: