INTERNAL CONTROL RPT 2 N-CEN-amendment.txt CONTROL LETTER February 25, 2020 Registrant: Pioneer Strategic Income Fund File No.: 333-71813 Form: N-CEN/A Original Filing Date: 12/13/19 Amended Filing Date: 2/25/20 Explanation: The Registrant amended the Form N-CEN for the period ended September 30, 2019 to correct, the filing to add the missing Auditor control letter.