3293219 - Two errors "Preferential Treatment is empty" and "Tax Classification Number is empty" occur when sending to GT

When sending to GT in app Create Outbound Files - China, two errors "Preferential Treatment is empty" and "Tax Classification Number is empty" occur.

SAP S/4HANA Cloud Public Edition.

1. Open app Create Outbound Files - China.
2. Fill out the mandatory fields.
3. Clicking Send To GT and the error "Preferential Treatment is empty" and "Tax Classification Number is empty" occur.

No corresponding tax classification number maintained.

The corresponding tax classification number must be maintained. It is required by the tax bureau. 

Please maintain these fields in app Maintain Tax Classification Number - China.

Preferential Treatment is empty, Tax Classification Number is empty, Create Outbound Files - China, APP_IDGT, IDGT_LC 009 , KBA , FI-LOC-GTI-CN , China , Problem