KB2243: Backup job fails with “The ... - Veeam Software
https://www.veeam.com/kb224310.02.2017 · Error: Agent: Failed to process method {Transform.Patch}: The request is not supported. Failed to duplicate extent. Target file: <path>vbk, Source file: <path>vib, TgtOffset: xx, SrcOffset: yy, DataSize: 4096 Full backup file merge failed Error: Agent: Failed to process method {Transform.Patch}: The request is not supported.