https://userapps.support.sap.com/sap/support/knowledge/en/2212299
2212299 - Unknown error when receiving the preconsolidated data - FC | SAP Knowledge Base Article
An error is displayed when receiving the preconsolidated data Error " Unknown error " On the ctserver technical log , the following lines were identified WARN...
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