Please refer to the following line: https://forge.etsi.org/rep/nfv/SOL005/blob/master/src/SOL005/NSFaultManagement/definitions/SOL005NSFaultManagement_def.yaml#L101 `faultDetails` should be an array of strings, instead of a string. Page 245 of the [SOL005 specification](https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/005/02.07.01_60/gs_NFV-SOL005v020701p.pdf) has the following, which indicates a cardinality on `faultDetails`: ``` | faultDetails | String | 0..N | Provides additional information about the fault. | ```