3778604 - "The size of the attachment is too big" error occurs in My Purchase Requisitions App while sending attachments

App My purchase requestions sending attachments with purchase order; error on export: "The size of the attachment is too big"; attachments marked as internal (SL9) are not sent to the supplier.

 SAP S/4HANA Cloud Public Edition

my purchase requisitions, manage purchase requisitions professional, create purchase order advanced, attachments, DMS, sl1, sl9, internal, external, not sent to supplier, transfer from requisition to order, output, export error, size of the attachment is too big , KBA , MM-PUR-REQ-SSP-2CL , Fiori UI for Self Service Procurement (Public Cloud) , Problem