Collector - "sync replica internal error" on device, yet edits sync

Question

I am unable to reliably sync replica from Collector on a AGOL hosted feature service. I get a "Sync relica internal error." However, about 90% of the time the edits are pushed through to the service and yet the error still appears in Collector.

We have hundreds of users that access these maps over the course of a year. Since the start of our program in 2017 this year has been the first that we have experienced this issue. Please help.

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SFM_WillBrewer · Answer

Yes and no. We have pursued the issue with ESRI. They determined that the issue originates with how ArcGIS Online creates and updates replicas from hosted feature services that are used in Collector. Our specific error dealt with the replica not accepting data deletions made to the service. They said they would work on a fix for the next AGOL quarterly update (i.e. Fall 2019).

TimothyRogers · Answer

Have you found any resolution to this issue?

JohnPapageorgiou · Answer

Same issue here, except the edits won't sync anymore for the past two weeks.  At least before the edits would sync, not anymore.  This is a big problem because we rely on the workflow collector provides.  It worked fine before, what changed?  We need the sync ability to work again.