https://userapps.support.sap.com/sap/support/knowledge/en/1472177
1472177 - BOFC: Error: "Unspecified error" when transferring preconsolidated data | SAP Knowledge...
Error when transferring preconsolidated data of more than one reporting ID in the same packet. Error: "Unspecified error".
bofcerrorunspecifiedtransferringdata