Hi Iam facing 
"insufficient access rights on cross-reference id "
issue may i know what is the reason iam updating the record that time iam facing the issue based on login user that record created by superior in role hierarchy and modified superior now iam login with other user iam unable to update the record that is in event object.and having accountid and contact id as whaid and whoid.user doesnt have access.but same user able to update another record iam confusing.

Hi,

I have used apex code to share the record with community user. While sharing the record to community user I am getting the below exception, That community user having full access.


System.DmlException: Insert failed. First exception on row 0; first error: INSUFFICIENT_ACCESS_ON_CROSS_REFERENCE_ENTITY, insufficient access rights on cross-reference id: []