A traceability link establishing method and system. The method includes retrieving by a computing system, mapping data comprising data associating elements of a source model to elements of a target model. The computing system retrieves the target model and elements of the target model. The computing system processes an element of the elements. The computing system retrieves first traceability links from the element. The computing system processes the traceability links. The computing system retrieves supplier data associated with the traceability links. The supplier data comprises data associated with a first supplier. The computing system verifies if the supplier comprises a valid supplier. The computing system stores results of the verifying process. The results indicate if the supplier comprises a valid supplier.