cause : Configuration error comes when you encounter a "Configuration Error" on a Siemens SINAMICS G120 drive, it typically indicates a problem with the configuration settings or parameters of the drive that prevent it from operating correctly. 

Alarm value (r2124, interpret decimal):

1: Re-parameterization between fault/alarm is not permissible.

419: When the fine resolution Gx_XIST2 is configured, the encoder identifies a maximum possible absolute position
actual value (r0483) that can no longer be represented within 32 bits.

Re alarm value = 1:
No re-parameterization between fault/alarm.
 

Re alarm value = 419:
Reduce the fine resolution (p0419) or deactivate the monitoring (p0437.25), if the complete multiturn range is not required.