diff --git a/fplus-lib/src/config.rs b/fplus-lib/src/config.rs
index 2498ccac..6a786444 100644
--- a/fplus-lib/src/config.rs
+++ b/fplus-lib/src/config.rs
@@ -34,6 +34,7 @@ pub fn default_env_vars() -> &'static HashMap<&'static str, &'static str> {
         m.insert("KYC_URL", "https://kyc.allocator.tech");
         m.insert("RPC_URL", "https://mainnet.optimism.io");
         m.insert("DMOB_API_URL", "https://api.datacapstats.io/public/api");
+        m.insert("DATACAPSTATS_API_URL", "https://api.datacapstats.io/api");
         m.insert("DMOB_API_KEY", "5c993a17-7b18-4ead-a8a8-89dad981d87e");
         m.insert("DAYS_TO_NEXT_AUTOALLOCATION", "14");
         m.insert(
diff --git a/fplus-lib/src/core/mod.rs b/fplus-lib/src/core/mod.rs
index a8c6b2f6..56605d97 100644
--- a/fplus-lib/src/core/mod.rs
+++ b/fplus-lib/src/core/mod.rs
@@ -15,6 +15,7 @@ use reqwest::Response;
 use serde::{Deserialize, Serialize};
 use serde_json::from_str;
 
+use crate::external_services::filecoin::get_client_allocation;
 use crate::{
     base64,
     config::get_env_var_or_default,
@@ -752,6 +753,33 @@ impl LDNApplication {
                             }
                         }
                     }
+
+                    match get_client_allocation(&application_id).await {
+                        Ok(response) => {
+                            if let Some(_) = response.count {
+                                log::info!("Allocation found for client {}", application_id);
+                                Self::issue_pathway_mismatch_comment(
+                                    issue_number,
+                                    info.owner,
+                                    info.repo,
+                                    None,
+                                )
+                                .await?;
+
+                                return Err(LDNError::New(
+                                    "Pathway mismatch: Client has already allocation".to_string(),
+                                ));
+                            } else {
+                                log::info!("Client allocation not found");
+                            }
+                        }
+                        Err(e) => {
+                            return Err(LDNError::New(format!(
+                                "Getting client allocation failed /// {}",
+                                e
+                            )));
+                        }
+                    }
                 }
 
                 let file_content = match serde_json::to_string_pretty(&application_file) {
diff --git a/fplus-lib/src/external_services/filecoin.rs b/fplus-lib/src/external_services/filecoin.rs
index ed95d7e7..faea4925 100644
--- a/fplus-lib/src/external_services/filecoin.rs
+++ b/fplus-lib/src/external_services/filecoin.rs
@@ -4,6 +4,7 @@ use crate::{
     config::get_env_var_or_default,
     models::filecoin::{
         StateReadStateResponse, StateVerifiedClientStatusResponse, StateVerifierStatusResponse,
+        VerifiedClientResponse,
     },
 };
 
@@ -86,3 +87,20 @@ pub async fn get_allowance_for_client(address: &str) -> Result<String, reqwest::
         .await?;
     Ok(response.result)
 }
+
+pub async fn get_client_allocation(
+    address: &str,
+) -> Result<VerifiedClientResponse, reqwest::Error> {
+    let api_url = get_env_var_or_default("DATACAPSTATS_API_URL");
+    let url = format!("{}/getVerifiedClients?filter={}", api_url, address);
+
+    let client = reqwest::Client::new();
+
+    let response = client
+        .get(&url)
+        .send()
+        .await?
+        .json::<VerifiedClientResponse>()
+        .await?;
+    Ok(response)
+}
diff --git a/fplus-lib/src/models/filecoin.rs b/fplus-lib/src/models/filecoin.rs
index 7e4e4123..e3350c31 100644
--- a/fplus-lib/src/models/filecoin.rs
+++ b/fplus-lib/src/models/filecoin.rs
@@ -1,4 +1,5 @@
 use serde::{Deserialize, Serialize};
+use serde_json::Value;
 
 pub type StateReadStateResponse = JSONRPCResponse<StateReadStateResult>;
 pub type StateVerifierStatusResponse = JSONRPCResponse<StateVerifierStatusResult>;
@@ -47,3 +48,25 @@ pub struct MultisigState {
     #[serde(rename = "PendingTxns")]
     pub pending_txns: Code,
 }
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct VerifiedClientResponse {
+    #[serde(deserialize_with = "number_to_string")]
+    pub count: Option<String>,
+}
+
+fn number_to_string<'de, D>(de: D) -> Result<Option<String>, D::Error>
+where
+    D: serde::Deserializer<'de>,
+{
+    let helper: Value = Deserialize::deserialize(de)?;
+
+    match helper {
+        Value::Number(n) => Ok(n
+            .as_u64()
+            .filter(|&number| number != 0)
+            .map(|_| n.to_string())),
+        Value::String(s) => Ok(Some(s)),
+        _ => Ok(None),
+    }
+}