diff --git a/fineract-provider/src/main/java/org/apache/fineract/portfolio/loanproduct/productmix/api/ProductMixApiResource.java b/fineract-provider/src/main/java/org/apache/fineract/portfolio/loanproduct/productmix/api/ProductMixApiResource.java
index 3e686b690..6302dd277 100644
--- a/fineract-provider/src/main/java/org/apache/fineract/portfolio/loanproduct/productmix/api/ProductMixApiResource.java
+++ b/fineract-provider/src/main/java/org/apache/fineract/portfolio/loanproduct/productmix/api/ProductMixApiResource.java
@@ -45,6 +45,7 @@ import org.apache.fineract.infrastructure.core.serialization.DefaultToApiJsonSer
 import org.apache.fineract.infrastructure.security.service.PlatformSecurityContext;
 import org.apache.fineract.portfolio.loanproduct.data.LoanProductData;
 import org.apache.fineract.portfolio.loanproduct.productmix.data.ProductMixData;
+import org.apache.fineract.portfolio.loanproduct.productmix.data.ProductMixRequest;
 import org.apache.fineract.portfolio.loanproduct.productmix.service.ProductMixReadPlatformService;
 import org.apache.fineract.portfolio.loanproduct.service.LoanProductReadPlatformService;
 import org.springframework.stereotype.Component;
@@ -88,39 +89,35 @@ public class ProductMixApiResource {
     @POST
     @Consumes({ MediaType.APPLICATION_JSON })
     @Produces({ MediaType.APPLICATION_JSON })
-    public String createProductMix(@PathParam("productId") final Long productId, final String apiRequestBodyAsJson) {
+    public CommandProcessingResult createProductMix(@PathParam("productId") final Long productId,
+            final ProductMixRequest productMixRequest) {
 
-        final CommandWrapper commandRequest = new CommandWrapperBuilder().createProductMix(productId).withJson(apiRequestBodyAsJson)
-                .build();
+        final CommandWrapper commandRequest = new CommandWrapperBuilder().createProductMix(productId)
+                .withJson(toApiJsonSerializer.serialize(productMixRequest)).build();
 
-        final CommandProcessingResult result = this.commandsSourceWritePlatformService.logCommandSource(commandRequest);
-
-        return this.toApiJsonSerializer.serialize(result);
+        return this.commandsSourceWritePlatformService.logCommandSource(commandRequest);
     }
 
     @PUT
     @Consumes({ MediaType.APPLICATION_JSON })
     @Produces({ MediaType.APPLICATION_JSON })
-    public String updateProductMix(@PathParam("productId") final Long productId, final String apiRequestBodyAsJson) {
+    public CommandProcessingResult updateProductMix(@PathParam("productId") final Long productId,
+            final ProductMixRequest productMixRequest) {
 
-        final CommandWrapper commandRequest = new CommandWrapperBuilder().updateProductMix(productId).withJson(apiRequestBodyAsJson)
-                .build();
+        final CommandWrapper commandRequest = new CommandWrapperBuilder().updateProductMix(productId)
+                .withJson(toApiJsonSerializer.serialize(productMixRequest)).build();
 
-        final CommandProcessingResult result = this.commandsSourceWritePlatformService.logCommandSource(commandRequest);
-
-        return this.toApiJsonSerializer.serialize(result);
+        return this.commandsSourceWritePlatformService.logCommandSource(commandRequest);
     }
 
     @DELETE
     @Consumes({ MediaType.APPLICATION_JSON })
     @Produces({ MediaType.APPLICATION_JSON })
-    public String deleteProductMix(@PathParam("productId") final Long productId) {
+    public CommandProcessingResult deleteProductMix(@PathParam("productId") final Long productId) {
 
         final CommandWrapper commandRequest = new CommandWrapperBuilder().deleteProductMix(productId).build();
 
-        final CommandProcessingResult result = this.commandsSourceWritePlatformService.logCommandSource(commandRequest);
-
-        return this.toApiJsonSerializer.serialize(result);
+        return this.commandsSourceWritePlatformService.logCommandSource(commandRequest);
     }
 
 }
diff --git a/fineract-provider/src/main/java/org/apache/fineract/portfolio/loanproduct/productmix/data/ProductMixRequest.java b/fineract-provider/src/main/java/org/apache/fineract/portfolio/loanproduct/productmix/data/ProductMixRequest.java
new file mode 100644
index 000000000..d8858dc4f
--- /dev/null
+++ b/fineract-provider/src/main/java/org/apache/fineract/portfolio/loanproduct/productmix/data/ProductMixRequest.java
@@ -0,0 +1,29 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.fineract.portfolio.loanproduct.productmix.data;
+
+import java.io.Serial;
+import java.io.Serializable;
+import java.util.List;
+
+public record ProductMixRequest(List<Long> restrictedProducts) implements Serializable {
+
+    @Serial
+    private static final long serialVersionUID = 1L;
+}