What are the grounds that can be relied upon to argue for the nullity or deficiency of a judicial expert report?

The nullity or deficiency of a judicial expert report can be argued if it relied on arbitrary estimations, or failed to clarify how the results and conclusions were reached, or did not take into account technical and substantive considerations, or contained contradictions, or acknowledged difficulty in proving a matter yet proceeded to establish a situation or completion rates without clear supporting documents, or failed to establish the works in terms of quantity, quality, and value, or did not rectify material errors. The report must be accurate and based on clear technical foundations and reliable documents.