diff --git a/openapi.yaml b/openapi.yaml
index 182abc0..f223600 100644
--- a/openapi.yaml
+++ b/openapi.yaml
@@ -2045,6 +2045,8 @@ components:
         asset_id:
           type: string
           example: rgb:CJkb4YZw-jRiz2sk-~PARPio-wtVYI1c-XAEYCqO-wTfvRZ8
+        assignment:
+          $ref: '#/components/schemas/Assignment'
         duration_seconds:
           type: integer
           example: 86400
diff --git a/src/ldk.rs b/src/ldk.rs
index 30788a5..195b3f6 100644
--- a/src/ldk.rs
+++ b/src/ldk.rs
@@ -1294,7 +1294,13 @@ impl OutputSpender for RgbOutputSpender {
                 new_asset = true;
                 let receive_data = self
                     .rgb_wallet_wrapper
-                    .witness_receive(None, None, vec![self.proxy_endpoint.clone()], 0)
+                    .witness_receive(
+                        None,
+                        Assignment::Any,
+                        None,
+                        vec![self.proxy_endpoint.clone()],
+                        0,
+                    )
                     .unwrap();
                 let script_pubkey = script_buf_from_recipient_id(receive_data.recipient_id.clone())
                     .unwrap()
diff --git a/src/rgb.rs b/src/rgb.rs
index e38f0eb..9c6de3a 100644
--- a/src/rgb.rs
+++ b/src/rgb.rs
@@ -34,12 +34,14 @@ impl UnlockedAppState {
     pub(crate) fn rgb_blind_receive(
         &self,
         asset_id: Option<String>,
+        assignment: Assignment,
         duration_seconds: Option<u32>,
         transport_endpoints: Vec<String>,
         min_confirmations: u8,
     ) -> Result<ReceiveData, RgbLibError> {
         self.rgb_wallet_wrapper.blind_receive(
             asset_id,
+            assignment,
             duration_seconds,
             transport_endpoints,
             min_confirmations,
@@ -280,12 +282,14 @@ impl UnlockedAppState {
     pub(crate) fn rgb_witness_receive(
         &self,
         asset_id: Option<String>,
+        assignment: Assignment,
         duration_seconds: Option<u32>,
         transport_endpoints: Vec<String>,
         min_confirmations: u8,
     ) -> Result<ReceiveData, RgbLibError> {
         self.rgb_wallet_wrapper.witness_receive(
             asset_id,
+            assignment,
             duration_seconds,
             transport_endpoints,
             min_confirmations,
@@ -314,13 +318,14 @@ impl RgbLibWalletWrapper {
     pub(crate) fn blind_receive(
         &self,
         asset_id: Option<String>,
+        assignment: Assignment,
         duration_seconds: Option<u32>,
         transport_endpoints: Vec<String>,
         min_confirmations: u8,
     ) -> Result<ReceiveData, RgbLibError> {
         self.get_rgb_wallet().blind_receive(
             asset_id,
-            Assignment::Any,
+            assignment,
             duration_seconds,
             transport_endpoints,
             min_confirmations,
@@ -614,13 +619,14 @@ impl RgbLibWalletWrapper {
     pub(crate) fn witness_receive(
         &self,
         asset_id: Option<String>,
+        assignment: Assignment,
         duration_seconds: Option<u32>,
         transport_endpoints: Vec<String>,
         min_confirmations: u8,
     ) -> Result<ReceiveData, RgbLibError> {
         self.get_rgb_wallet().witness_receive(
             asset_id,
-            Assignment::Any,
+            assignment,
             duration_seconds,
             transport_endpoints,
             min_confirmations,
diff --git a/src/routes.rs b/src/routes.rs
index e01ae3d..f2876aa 100644
--- a/src/routes.rs
+++ b/src/routes.rs
@@ -928,6 +928,7 @@ pub(crate) struct RgbAllocation {
 #[derive(Deserialize, Serialize)]
 pub(crate) struct RgbInvoiceRequest {
     pub(crate) asset_id: Option<String>,
+    pub(crate) assignment: Option<Assignment>,
     pub(crate) duration_seconds: Option<u32>,
     pub(crate) min_confirmations: u8,
     pub(crate) witness: bool,
@@ -3322,9 +3323,12 @@ pub(crate) async fn rgb_invoice(
             return Err(APIError::OpenChannelInProgress);
         }
 
+        let assignment = payload.assignment.unwrap_or(Assignment::Any).into();
+
         let receive_data = if payload.witness {
             unlocked_state.rgb_witness_receive(
                 payload.asset_id,
+                assignment,
                 payload.duration_seconds,
                 vec![unlocked_state.proxy_endpoint.clone()],
                 payload.min_confirmations,
@@ -3332,6 +3336,7 @@ pub(crate) async fn rgb_invoice(
         } else {
             unlocked_state.rgb_blind_receive(
                 payload.asset_id,
+                assignment,
                 payload.duration_seconds,
                 vec![unlocked_state.proxy_endpoint.clone()],
                 payload.min_confirmations,
diff --git a/src/test/mod.rs b/src/test/mod.rs
index ea4721f..d4f04a0 100644
--- a/src/test/mod.rs
+++ b/src/test/mod.rs
@@ -1299,6 +1299,15 @@ async fn rgb_invoice(
     node_address: SocketAddr,
     asset_id: Option<String>,
     witness: bool,
+) -> RgbInvoiceResponse {
+    rgb_invoice_with_assignment(node_address, asset_id, None, witness).await
+}
+
+async fn rgb_invoice_with_assignment(
+    node_address: SocketAddr,
+    asset_id: Option<String>,
+    assignment: Option<Assignment>,
+    witness: bool,
 ) -> RgbInvoiceResponse {
     println!(
         "generating RGB invoice{} for node {node_address}",
@@ -1311,6 +1320,7 @@ async fn rgb_invoice(
     let payload = RgbInvoiceRequest {
         min_confirmations: 1,
         asset_id,
+        assignment,
         duration_seconds: None,
         witness,
     };
diff --git a/src/test/send_receive.rs b/src/test/send_receive.rs
index e3584a7..d031fbc 100644
--- a/src/test/send_receive.rs
+++ b/src/test/send_receive.rs
@@ -44,7 +44,13 @@ async fn send_receive() {
         recipient_id,
         invoice,
         ..
-    } = rgb_invoice(node1_addr, Some(asset_id.clone()), true).await;
+    } = rgb_invoice_with_assignment(
+        node1_addr,
+        Some(asset_id.clone()),
+        Some(Assignment::Fungible(300)),
+        true,
+    )
+    .await;
     let witness_data = WitnessData {
         amount_sat: 1200,
         blinding: None,
@@ -69,12 +75,15 @@ async fn send_receive() {
     assert_eq!(decoded.recipient_id, recipient_id);
     assert!(matches!(decoded.asset_schema, Some(AssetSchema::Nia)));
     assert_eq!(decoded.asset_id, Some(asset_id.clone()));
-    assert_eq!(decoded.assignment, Assignment::Fungible(0));
+    assert_eq!(decoded.assignment, Assignment::Fungible(300));
     assert!(matches!(decoded.network, BitcoinNetwork::Regtest));
     assert!(decoded.expiration_timestamp.is_some());
     assert_eq!(decoded.transport_endpoints, vec![PROXY_ENDPOINT_LOCAL]);
 
-    let recipient_id = rgb_invoice(node2_addr, None, false).await.recipient_id;
+    let recipient_id =
+        rgb_invoice_with_assignment(node2_addr, None, Some(Assignment::Fungible(200)), false)
+            .await
+            .recipient_id;
     send_asset(
         node1_addr,
         &asset_id,