How to upload a file in the attachment folder of a freight order in TMS for S4?

Hello Everyone,

I person a request to upload a record successful the attachment folder of a fright bid successful TMS for S4 utilizing inbound proxy.

I americium trying to usage this proxy TransportationEventBulkNotification_In but I americium getting an error

Also I checked this forum (How to update a nexus successful the attachment folder of a... - SAP Community) and tryed to regenerate the nexus accusation to File accusation but I americium not getting occurrence connected this.

Can you delight assistance me?