Punjab & Haryana High Court (Surya Partap Singh, J.) allowed CRR-80-2021 (O&M) preferred by the complainant-petitioner (M/s Supertech Machines Pvt. Ltd.) against the order dated 07.03.2020 of the learned Additional Sessions Judge, Faridabad, whereby, in the respondents'/convicts' appeal against their conviction dated 04.12.2018 under Sections 138/142 of the Negotiable Instruments Act, their application under Section 391 CrPC was allowed, permitting them to lead additional evidence (examination of the concerned person of Mahavir Courier Service Pvt. Ltd. with record, and of the Economic Offences Wing, Faridabad Police official with the Enquiry Report) to impeach delivery of proforma invoice (Ex.C-10). Held: where the trial court afforded proper opportunity to lead defence evidence, permission to lead additional evidence at the appellate stage should not be granted in a routine manner absent cogent reason for the earlier failure; the respondents knew of the delivery stand from the outset yet failed to impeach it at cross-examination or in defence evidence and did not seek the courier official even in their Section 311 CrPC application, belying due diligence; evidence created/generated after the judgment of conviction (the police Enquiry Report) has no relevance or credibility; a police enquiry into the credibility of a document already believed by the trial court is an abuse of process and beyond police jurisdiction, as no police authority may override judicial findings; the proforma invoice merely evidenced admitted business dealings and past payments, was not a fact in issue, and existing liability being provable through account books, the prayer was devoid of merit. Guided by Ajitsinh Chehuji Rathod (AIR 2014 SC 787) (applied), Rambhau (AIR 2001 SC 2120), Brig. Sukhjeet Singh (2019(16) SCC 712) and Rajeswar Prasad Misra (AIR 1965 Supreme Court 1887) (relied on); Swaraj Mazda Ltd. V/s Vijay Pal Adhana (CRM-M-23768-2017) referred. Revision petition allowed; impugned order set aside; pending miscellaneous applications disposed of accordingly.