I am using REST API V1 for connecting to Marketo. I am trying to make request for merging two leads, but I am getting error "611": "Failed to merge leads".
Strange part is I don't see this error every time. My merge request works well most of the time, but few times it just throw me above error.
Out of my 20 request 1 will face this issue, others works well.
I checked my request for operation it is same for all the requests. Why there is inconsistency in merge operation for multiple request?
Is there anyone seeing this issue? Is there any known issues for merge REST API?