I am getting the this error when I “Run All Tests” however the error disappears when I run test for individual classes. With All Tests most of the classes give same error.
*Error Details *
Error Message System.DmlException: Insert failed. First exception on row 0; first error: CANNOT_INSERT_UPDATE_ACTIVATE_ENTITY, trgOrphanId: execution of AfterInsert
caused by: System.QueryException: Record Currently Unavailable: The record you are attempting to edit, or one of its related records, is currently being modified by another user. Please try again.
Trigger.trgOrphanId: line 23, column 1:  Stack Trace Class.testBatchDonorAllocation.myUnitTest: line 39, column 1
help will be much appreciated.