---
title: Data quality rating & Primary data share according to TfS
description: Learn how to evaluate the quality of your emission factors and activity data and use that information to determine the data quality and the proportion of primary data in your dataset.
---

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# Data quality rating & Primary data share according to TfS

In the TfS-compliant PCF report, too, you can assess the data quality of your emission factors and activity data using the Data Quality Rating (DQR) and the Primary Data Share (PDS). Data entry, calculation, and results presentation currently follow the **Catena-X standard**, in which the **biogenic carbon content is not taken into account**.

For a detailed description of data entry and output for the Data Quality Rating and the Primary Data Share, see the article [**Data Quality Rating & Primary Data Share according to Catena-X**](https://helpdesk.verso.de/en/climate-hub/datenqualit%C3%A4tsrating-und-prim%C3%A4rdatenanteil-nach-catena-x?hsLang=en).

**Note:** Since the Data Quality Rating and the Primary Data Share are currently calculated according to the Catena-X standard, they are not included in the TfS-compliant CSV export.

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