Hello
Refer to following SAP Notes for detailed explanation and resolution of this issue.
SAP note 1641830 - Reorganization of Business Communication Services data (RSBCS_REORG)
"To delete these 'Non-Deleteable Documents' you must first delete the links using the appropriate report below and after run RSBCS_REORG to completely delete these records. Please note if you double click on a line under 'Non-Deleteable Documents' you will get more information about the document.
Send request not yet released. Use the report RSBCS_SREQ_RELEASE (see Note 1238740) to release these send requests
Link to Application. You can use the report RSBCS_SREQ_UNLINK (see Note 1276402) to delete these links
Expiration date not yet reached. Use the report RSBCS_SREQ_EXPIRE (see Note 1478279) to set these send requests to be expired
Send request is in SAPconnect queue. Use the report RSBCS_DELETE_QUEUE (see Note 1244680) to delete these send requests from the SAPconnect queue
Document is in a folder. Depending on which folder these documents are in your must run the appropriate report. If a document is in a Users folder then run report RSSO_DELETE_PRIVATE (see Note 922671). If the documents are in a Shared folder then run RSSOTRCL. If the documents are in the Hidden folder then run RSSODFRE (see Note 567975) "
Regards
Sandy