diff --git a/src/darwin/Framework/CHIP/MTRNOCChainIssuer.h b/src/darwin/Framework/CHIP/MTRNOCChainIssuer.h
index 2ef76670532118..0757bbe10021a5 100644
--- a/src/darwin/Framework/CHIP/MTRNOCChainIssuer.h
+++ b/src/darwin/Framework/CHIP/MTRNOCChainIssuer.h
@@ -43,8 +43,8 @@ NS_ASSUME_NONNULL_BEGIN
  */
 - (void)onNOCChainGenerationNeeded:(CSRInfo *)csrInfo
                    attestationInfo:(AttestationInfo *)attestationInfo
-      onNOCChainGenerationComplete:(void (^)(NSData * operationalCertificate, NSData * intermediateCertificate,
-                                       NSData * rootCertificate, NSData * ipk, NSNumber * adminSubject,
+      onNOCChainGenerationComplete:(BOOL (^)(NSData * operationalCertificate, NSData * intermediateCertificate,
+                                       NSData * rootCertificate, NSData * _Nullable ipk, NSNumber * _Nullable adminSubject,
                                        NSError * __autoreleasing * error))onNOCChainGenerationComplete;
 
 @end
diff --git a/src/darwin/Framework/CHIP/MTROperationalCredentialsDelegate.h b/src/darwin/Framework/CHIP/MTROperationalCredentialsDelegate.h
index 803e19eee30eed..3d0c39eacb7a2c 100644
--- a/src/darwin/Framework/CHIP/MTROperationalCredentialsDelegate.h
+++ b/src/darwin/Framework/CHIP/MTROperationalCredentialsDelegate.h
@@ -127,7 +127,7 @@ class MTROperationalCredentialsDelegate : public chip::Controller::OperationalCr
      * If ipk and adminSubject are non nil, then they will be used in the AddNOC command sent to the commissionee. If they are not
      * populated, then the values provided in the MTRDeviceController initialization will be used.
      */
-    void onNOCChainGenerationComplete(NSData * operationalCertificate, NSData * intermediateCertificate, NSData * rootCertificate,
+    BOOL onNOCChainGenerationComplete(NSData * operationalCertificate, NSData * intermediateCertificate, NSData * rootCertificate,
         NSData * _Nullable ipk, NSNumber * _Nullable adminSubject, NSError * __autoreleasing * error);
 
     void setNSError(CHIP_ERROR err, NSError * __autoreleasing * outError);
diff --git a/src/darwin/Framework/CHIP/MTROperationalCredentialsDelegate.mm b/src/darwin/Framework/CHIP/MTROperationalCredentialsDelegate.mm
index 1113ad18505086..31756493683cc1 100644
--- a/src/darwin/Framework/CHIP/MTROperationalCredentialsDelegate.mm
+++ b/src/darwin/Framework/CHIP/MTROperationalCredentialsDelegate.mm
@@ -205,9 +205,9 @@
     dispatch_sync(mNocChainIssuerQueue, ^{
         [mNocChainIssuer onNOCChainGenerationNeeded:csrInfo
                                     attestationInfo:attestationInfo
-                       onNOCChainGenerationComplete:^void(NSData * operationalCertificate, NSData * intermediateCertificate,
+                       onNOCChainGenerationComplete:^BOOL(NSData * operationalCertificate, NSData * intermediateCertificate,
                            NSData * rootCertificate, NSData * ipk, NSNumber * adminSubject, NSError * __autoreleasing * error) {
-                           onNOCChainGenerationComplete(
+                           return onNOCChainGenerationComplete(
                                operationalCertificate, intermediateCertificate, rootCertificate, ipk, adminSubject, error);
                        }];
     });
@@ -222,13 +222,13 @@
     }
 }
 
-void MTROperationalCredentialsDelegate::onNOCChainGenerationComplete(NSData * operationalCertificate,
+BOOL MTROperationalCredentialsDelegate::onNOCChainGenerationComplete(NSData * operationalCertificate,
     NSData * intermediateCertificate, NSData * rootCertificate, NSData * _Nullable ipk, NSNumber * _Nullable adminSubject,
     NSError * __autoreleasing * error)
 {
     if (operationalCertificate == nil || intermediateCertificate == nil || rootCertificate == nil) {
         setNSError(CHIP_ERROR_INVALID_ARGUMENT, error);
-        return;
+        return NO;
     }
 
     // use ipk and adminSubject from CommissioningParameters if not passed in.
@@ -240,7 +240,7 @@
     });
     if (!commissioningParameters.HasValue()) {
         setNSError(CHIP_ERROR_INCORRECT_STATE, error);
-        return;
+        return NO;
     }
 
     chip::Optional<chip::Crypto::AesCcm128KeySpan> ipkOptional;
@@ -249,7 +249,7 @@
     if (ipk != nil) {
         if ([ipk length] != sizeof(ipkValue)) {
             setNSError(CHIP_ERROR_INCORRECT_STATE, error);
-            return;
+            return NO;
         }
         memcpy(&ipkValue[0], [ipk bytes], [ipk length]);
         ipkOptional.SetValue(ipkTempSpan);
@@ -273,7 +273,9 @@
     if (err != CHIP_NO_ERROR) {
         MTR_LOG_ERROR("Failed to SetNocChain for the device: %" CHIP_ERROR_FORMAT, err.Format());
         setNSError(CHIP_ERROR_INCORRECT_STATE, error);
+        return NO;
     }
+    return YES;
 }
 
 CHIP_ERROR MTROperationalCredentialsDelegate::LocalGenerateNOCChain(const chip::ByteSpan & csrElements,