# Error type 8400

The following table lists the 8400 type (TCP manager) errors:

Error code | Error name | Description | Category
--- | --- | --- | ---
-1024 | GTPERR_MGR04_NOT_CONFIGURED | START_MANAGER given before CONFIGURE_MGR. | 3
-1025 | GTPERR_BAD_ENGINE_REV | TCP requires different GTP engine revision. | 3
-1026 | GTPERR_BAD_CHANNEL_NUMBER | Invalid channel number. | 3
-1027 | GTPERR_BAD_TCP_NAME | Invalid TCP. | 3
-1028 | GTPERR_BAD_BUFFER_COUNT | Invalid number of buffers passed. | 3
-1029 | GTPERR_BAD_BUFFER_SIZE | Inconsistent buffer size. | 3
-1030 | GTPERR_BAD_PARAMETER_COUNT | Invalid parameter count. | 3
-1031 | GTPERR_BAD_PARAMETER_INDEX | Bad parameter index. | 3
-1032 | GTPERR_PARAM_INIT_ERROR | Cannot initialize parameter. Parameter is out of range. | 3
-1033 | GTPERR_TOO_MANY_TCPS | Attempted to load more TCPs than the maximum allowed. | 3
-1034 | GTPERR_CANNOT_ALLOCATE_TCP | Cannot allocate TCP memory. | 3
-1035 | GTPERR_CANNOT_FREE_TCP | Cannot deallocate TCP memory. | 3