@kranshi123
There is a Flat File Connector you can use in a webMethods.io Integration FlowService.
Look for documentation here; Custom Connectors - webMethods.io Integration.
If you have XML you can first convert it to an IS Document using the built in service xmlNodeToDocument, then convert the Document to an outbound flat file using convertDocumentToFlatFile.
This is mentioned in the above documentation.
I’d also like to point on the new webMethods.io Integration Developer Guidelines. Start here: webMethods.io Integration Developer Guidelines - Knowledge base / Blog - Software AG Tech Community & Forums
The tech community article wlll take you to a GitHub repo. There is a note in the guidelines about the FlatFile connector: large files ( > 250MB) will cause issues and you will need to use the ffIterator so the data can be processed in “chunks”.
Wayne