Yes, it is possible to add two columns to an Excel sheet, after which the products will automatically be sent to GS1 by the agent that runs once an hour.
The two columns to be added are: X9000="Y" and X9004="3"
X9000: Y = Ready to send
X9004: 3 = Awaiting resubmission to GS1
Other X9004 values:
1 = Sent to GS1
2 = Uploaded to GS1
9 = Rejected by GS1
Remember that the products will be uploaded with the value already in field D8164 (ADD, CORRECT, CHANGE etc.)