Partitioning existing table issue - Help needed!

Dear All,

I am partitioning the large table using declarative partitioning method in PostgreSQL 10.13.

The below steps which I am using are :

1. created parent  table
2. create sub-partitioned table
3. created index for each partition
4. created function
5. creating trigger but end with below error:-

SQL Error [42809]: ERROR: "contact_transaction_history_parent_part_bkp_am" is a partitioned table

  Detail: Partitioned tables cannot have ROW triggers.

Please let me know what is the issue with this?

Kindly advise.

Regards,

AShok