SMS failed: mandatory_param_missing Validation failed for argument [0] in public org.springframework.http.ResponseEntity<com.timwetech.safaricom.sms.api.dto.SmsResponse> com.timwetech.safaricom.sms.api.SmsController.sendSms(com.timwetech.safaricom.sms.api.dto.SmsRequest): [Field error in object 'smsRequest' on field 'msisdn': rejected value []; codes [NotBlank.smsRequest.msisdn,NotBlank.msisdn,NotBlank.java.lang.String,NotBlank]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [smsRequest.msisdn,msisdn]; arguments []; default message [msisdn]]; default message [msisdn is mandatory]] mandatory_param_missing Validation failed for argument [0] in public org.springframework.http.ResponseEntity<com.timwetech.safaricom.sms.api.dto.SmsResponse> com.timwetech.safaricom.sms.api.SmsController.sendSms(com.timwetech.safaricom.sms.api.dto.SmsRequest): [Field error in object 'smsRequest' on field 'msisdn': rejected value []; codes [NotBlank.smsRequest.msisdn,NotBlank.msisdn,NotBlank.java.lang.String,NotBlank]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [smsRequest.msisdn,msisdn]; arguments []; default message [msisdn]]; default message [msisdn is mandatory]]