diff --git a/webserver/main/request_models/schema.py b/webserver/main/request_models/schema.py
index f9e29c4..b01f9e3 100644
--- a/webserver/main/request_models/schema.py
+++ b/webserver/main/request_models/schema.py
@@ -137,6 +137,8 @@ class Domain(Enum):
     ONDC_RET19 = 'ONDC:RET19'
     ONDC_RET20 = 'ONDC:RET20'
     ONDC_AGR10 = 'ONDC:AGR10'
+    ONDC_RET1A = 'ONDC:RET1A'
+    ONDC_RET1B = 'ONDC:RET1B'
 
 
 class Duration(BaseModel):