---
title: "Inaccurate Converted Assay Results in tblAssayFlat after Ranking"
canonical: "https://servicedesk.maxgeo.com/space/DataShed4/1270186356/Inaccurate%20Converted%20Assay%20Results%20in%20tblAssayFlat%20after%20Ranking"
format: markdown
---
**Issue:**

Assay results for attributes after conversion not accurate after ranking.

![image](media://93436015-7656-4386-a8b6-70a0e75b6112)

**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://585b33a8-1827-4305-bcae-58e02c6c181e)