VLSR fails to promote replica devices.
The following error is observed in the SRM logs or the Recent Tasks pane: Failed to promote replica devices. A general system error occurred: N2Dr3Xml20XmlValidateExceptionE empty content is not valid for content model '(((Eui64,Nguid)|Wwn|NfsName|Lun+|Eui64|Nguid|Uuid))' (1)
VMware Live Site Recovery 9.x
The error is caused by an invalid or empty identity tag in the XML response provided by the third-party Storage Replication Adapter (SRA). SRM expects a valid storage identifier (such as Eui64, WWN, or UUID) based on its XML schema, but the SRA is returning empty content for a managed LUN or device.
Verify the storage array configuration to ensure all replicated LUNs and devices have valid, standardized identifiers (WWN/UUID) without unsupported special characters.
Collect the SRA logs from the SRM server.
Engage the specific Storage Array and SRA vendor support team to analyze the discoverDevices or prepareFailover XML output and correct the adapter logic. This issue originates outside of VMware software.