diff --git a/src/EPR.Calculator.API.UnitTests/Services/TransposePomAndOrgDataServiceTests.cs b/src/EPR.Calculator.API.UnitTests/Services/TransposePomAndOrgDataServiceTests.cs
index 35102b9..bf2b449 100644
--- a/src/EPR.Calculator.API.UnitTests/Services/TransposePomAndOrgDataServiceTests.cs
+++ b/src/EPR.Calculator.API.UnitTests/Services/TransposePomAndOrgDataServiceTests.cs
@@ -1,4 +1,5 @@
 using EPR.Calculator.API.Data.DataModels;
+using EPR.Calculator.API.Dtos;
 using EPR.Calculator.API.Services;
 using EPR.Calculator.API.Tests.Controllers;
 using EPR.Calculator.API.Wrapper;
@@ -38,7 +39,9 @@ public void Transpose_Should_Return_Correct_Producer_Detail()
 #pragma warning disable CS8604 // Possible null reference argument.
             var service = new TransposePomAndOrgDataService(dbContext);
 #pragma warning restore CS8604 // Possible null reference argument.
-            service.Transpose(3);
+
+            var resultsRequestDto = new CalcResultsRequestDto { RunId = 3 };
+            service.Transpose(resultsRequestDto);
 
             var producerDetail = dbContext.ProducerDetail.FirstOrDefault();
             Assert.IsNotNull(producerDetail);
@@ -78,7 +81,9 @@ public void Transpose_Should_Return_Correct_Producer_Reported_Material()
 #pragma warning disable CS8604 // Possible null reference argument.
             var service = new TransposePomAndOrgDataService(dbContext);
 #pragma warning restore CS8604 // Possible null reference argument.
-            service.Transpose(3);
+
+            var resultsRequestDto = new CalcResultsRequestDto { RunId = 3 };
+            service.Transpose(resultsRequestDto);
 
             var producerReportedMaterial = dbContext.ProducerReportedMaterial.FirstOrDefault();
             Assert.IsNotNull(producerReportedMaterial);
diff --git a/src/EPR.Calculator.API/Controllers/CalculatorInternalController.cs b/src/EPR.Calculator.API/Controllers/CalculatorInternalController.cs
index 4e27e7e..a668183 100644
--- a/src/EPR.Calculator.API/Controllers/CalculatorInternalController.cs
+++ b/src/EPR.Calculator.API/Controllers/CalculatorInternalController.cs
@@ -150,7 +150,7 @@ public IActionResult UpdateRpdStatus([FromBody] UpdateRpdStatus request)
         [Route("prepareCalcResults")]
         public IActionResult PrepareCalcResults([FromBody] CalcResultsRequestDto resultsRequestDto)
         {
-            this.transposePomAndOrgDataService.Transpose(resultsRequestDto.RunId);
+            this.transposePomAndOrgDataService.Transpose(resultsRequestDto);
             var results = this.builder.Build(resultsRequestDto);
             this.exporter.Export(results);
             return new ObjectResult(null) { StatusCode = StatusCodes.Status201Created };
diff --git a/src/EPR.Calculator.API/Services/ITransposePomAndOrgDataService.cs b/src/EPR.Calculator.API/Services/ITransposePomAndOrgDataService.cs
index 7fe9a71..26651c5 100644
--- a/src/EPR.Calculator.API/Services/ITransposePomAndOrgDataService.cs
+++ b/src/EPR.Calculator.API/Services/ITransposePomAndOrgDataService.cs
@@ -1,7 +1,9 @@
-namespace EPR.Calculator.API.Services
+using EPR.Calculator.API.Dtos;
+
+namespace EPR.Calculator.API.Services
 {
     public interface ITransposePomAndOrgDataService
     {
-        public void Transpose(int runId);
+        public void Transpose(CalcResultsRequestDto resultsRequestDto);
     }
 }
diff --git a/src/EPR.Calculator.API/Services/TransposePomAndOrgDataService.cs b/src/EPR.Calculator.API/Services/TransposePomAndOrgDataService.cs
index 0cee492..a5874f2 100644
--- a/src/EPR.Calculator.API/Services/TransposePomAndOrgDataService.cs
+++ b/src/EPR.Calculator.API/Services/TransposePomAndOrgDataService.cs
@@ -1,6 +1,6 @@
 using EPR.Calculator.API.Data;
 using EPR.Calculator.API.Data.DataModels;
-using EPR.Calculator.API.Wrapper;
+using EPR.Calculator.API.Dtos;
 
 namespace EPR.Calculator.API.Services
 {
@@ -14,11 +14,11 @@ public TransposePomAndOrgDataService(ApplicationDBContext context)
             this.context = context;
         }
 
-        public void Transpose(int runId)
+        public void Transpose(CalcResultsRequestDto resultsRequestDto)
         {
             var materials = this.context.Material.ToList();
 
-            var calculatorRun = this.context.CalculatorRuns.Single(cr => cr.Id == runId);
+            var calculatorRun = this.context.CalculatorRuns.Single(cr => cr.Id == resultsRequestDto.RunId);
 
             if (calculatorRun.CalculatorRunPomDataMasterId != null)
             {
@@ -48,7 +48,7 @@ public void Transpose(int runId)
                                 {
                                     var producerDetail = new ProducerDetail
                                     {
-                                        CalculatorRunId = runId,
+                                        CalculatorRunId = resultsRequestDto.RunId,
                                         ProducerId = pom.OrganisationId.Value,
                                         SubsidiaryId = pom.SubsidaryId,
                                         ProducerName = producerName,