Append not working

[Zeke]

Any ideas why Append is throwing the error below? There are three parcels selected, that I'm trying to append to the Cases feature class. As far as I can tell, there's absolutely nothing that's using Cases. No one else has access to this geodb, so it's not a case of another user, and I'm not doing anything else with it. Using Append from the toolbox works fine. Thanks.

Code:

import arcpy from arcpy import env  env.workspace = r"\\TestServer\TestCases_Geodatabase.gdb"  #------------------------------------------------------------------------------- # Append selected parcels to Cases #  def AppendParcelsToCases():     input = "Parcel"     target = "Cases"     schemaType = "NO_TEST"      try:         arcpy.Append_management(input, target, schemaType)     except Exception as e:         arcpy.AddError("Error creating case feature! \n" + e.message)

Error:

Executing: CreateCase Start Time: Fri Mar 30 11:01:12 2012 Running script CreateCase... Error creating case feature!  ERROR 999999: Error executing function. Cannot acquire a lock. Cannot acquire a lock. [The table Cases is being written by another process.] Cannot acquire a lock. [The table Cases is being written by another process.] Failed to execute (Append).  Completed script CreateCase... Failed to execute (CreateCase). Failed at Fri Mar 30 11:01:16 2012 (Elapsed Time: 4.00 seconds) 

[Zeke · Accepted solution]

Never mind, figured it out.
If anyone else runs into this, the problem was that Cases data source pointed to a mapped drive path to the data "P:\TestCases_Geodatabase.gdb", while the workspace and some other feature classes used the UNC path "\\TestServer\TestCases_Geodatabase.gdb". It's the same location, but apparently ArcGIS is picky about it.