I have just had the following email generated for one of my staff, I was wondering if anyone could shed any light on this as I can't seem to find a resolve on the internet

Thankyou in advance.

This e-mail was generated for technical support purposes.

Sync Type: Delta Sync

Sync Token (before request): 7182

Sync Token (most current): 7235

Store: Zimbra - retestdiaryuk

Computer Name: JOHNB64

ZCO Version:

Server Version: 7.2.0_GA_2669

Error IDs:
id (4689) type(appointment)
id (4681) type(appointment)