---
title: "DataShed4 - Inaccurate Converted Assay Results in tblAssayFlat after Ranking"
canonical: "https://servicedesk.maxgeo.com/space/MAXGEO/1067057166/DataShed4%20-%20Inaccurate%20Converted%20Assay%20Results%20in%20tblAssayFlat%20after%20Ranking"
format: markdown
---
**Issue:**

Assay results for attributes after conversion not accurate after ranking.

![image](media://ba3bd305-aa9f-4de6-85e6-84d627cbf87d)

**Reason:**

Ranking completed using DataShed ranking engine rather than SQL Stored Procedure.  
Note - DataShed method uses Real date type which results in an approximation of the calculated value.

**Solution:**

Use the SQL Stored Procedure by ticking the correct box under System Administration>Assay Management>Advanced Config> Assay Stored Procedure Options

![image](media://ee0c03dc-42a4-4831-b9eb-cb0254c049ac)