# Type 6: Error messages on data transfer to control device

Error messages are generated if unknown entries are detected when the controller is started or parameter lists are updated.

These error messages contain the following additional diagnostic data:

Data format | Element | Contains
FILE_NAME | file_name | File name
UNS32 | file offset | File offset
UNS16 | listen_typ | List type
STRUKT_NAME | strukt_name | Structure element

Practical examples:

- Incorrect entry in the parameter list of the decoder (SDA-MDS), unknown element