Update descriptive flex field for External Transaction

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Hi All,

As per our functional requirement, we need to update ATTRIBUTE1 of descriptive flex fields for External Transactions under Cash Management.

I have come across a REST API which describes how it can be done.The challenge is that we have a high volume of external transactions for which we need to update the DFFs. We cannot invoke the REST API for each transaction id as it will degrade the performance for both middleware and SaaS.

Is there another way to update the DFFs in bulk for external transaction id from OIC(Oracle Integration Cloud).

Warm Regards,

Ritu