globalTableWitnessUpdates

A list of witness updates for a MRSC global table. A witness provides a cost-effective alternative to a full replica in a MRSC global table by maintaining replicated change data written to global table replicas. You cannot perform read or write operations on a witness. For each witness, you can request one action:

• Create - add a new witness to the global table.

• Delete - remove a witness from the global table.

You can create or delete only one witness per UpdateTable operation.

For more information, see Multi-Region strong consistency (MRSC) in the Amazon DynamoDB Developer Guide