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    <title>topic Re: Error when using CalculateField_Management in Python Questions</title>
    <link>https://community.esri.com/t5/python-questions/error-when-using-calculatefield-management/m-p/154982#M11972</link>
    <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;SPAN&gt;Hello,&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;Efectively the Calculatefield_management code was wrong. I was using PORTALES when te correct is F_PORTALES.&amp;nbsp; I supose the amount of tries i did, I changed this and not rollbacked it, before post to the forum.&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;But&amp;nbsp; using the correct code, the same error raises:&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;&amp;gt;&amp;gt;&amp;gt; Unhandled exception while debugging...&lt;/SPAN&gt;&lt;BR /&gt;&lt;SPAN&gt;Traceback (most recent call last):&lt;/SPAN&gt;&lt;BR /&gt;&lt;SPAN&gt;&amp;nbsp; File "\\SAytofich\carpetasgrupos\...\Python Scripts\CalculoSecciones.py", line 76, in &amp;lt;module&amp;gt;&lt;/SPAN&gt;&lt;BR /&gt;&lt;SPAN&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; gp.CalculateField_management(F_PORTALES, "DIS", "!GISTOPOGRAFIA.Portales_SpatialJoin.CODDC!","Python")&lt;/SPAN&gt;&lt;BR /&gt;&lt;SPAN&gt;ExecuteError: ERROR 999999: Error executing function.&lt;/SPAN&gt;&lt;BR /&gt;&lt;SPAN&gt;Failed to execute (CalculateField).&lt;/SPAN&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
    <pubDate>Mon, 11 Apr 2011 08:01:22 GMT</pubDate>
    <dc:creator>FernandoMons</dc:creator>
    <dc:date>2011-04-11T08:01:22Z</dc:date>
    <item>
      <title>Error when using CalculateField_Management</title>
      <link>https://community.esri.com/t5/python-questions/error-when-using-calculatefield-management/m-p/154980#M11970</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;SPAN&gt;Hello,&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;I am trying to do an update of two fields of a Feature Class (Point), based on a Spatial Join with another Feature Class (Polygon). The spatial type IS_WITHIN (Point is within Polygon)&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;The steps I'm trying to do are the following&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;1. Create the Spatial Join Feature class&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;PRE class="plain" name="code"&gt;gp.SpatialJoin_analysis(PORTALES, SECCIONES, PORTALES_SPATIAL, "JOIN_ONE_TO_ONE", "KEEP_ALL", "NUMERO 'NUMERO' true true false 3 Text 0 0 ...........)&lt;/PRE&gt;&lt;DIV style="display:none;"&gt; &lt;/DIV&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;2. Transform PORTALES_SPATIAL (Spatial_Join) and PORTALES (Points)&amp;nbsp; to table_view, feature layer&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;&amp;nbsp; &lt;/SPAN&gt;&lt;PRE class="plain" name="code"&gt;gp.MakeTableView_management(PORTALES_SPATIAL, SPATIAL_VIEW, "", "", "Join_Count Join_Count VISIBLE NONE;NUMERO NUMERO VISIBLE NONE;....)


&amp;nbsp; gp.MakeFeatureLayer_management(PORTALES, F_PORTALES, "", wsTEMP, "NUMERO NUMERO VISIBLE NONE ..............)&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/PRE&gt;&lt;DIV style="display:none;"&gt; &lt;/DIV&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;3. Join F_PORTALES&amp;nbsp; (Point Feature Classes) and SPATIAL_VIEW (Spatial Join Table_View)&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;PRE class="plain" name="code"&gt;gp.AddJoin_management(F_PORTALES, "OBJECTID", SPATIAL_VIEW, "OBJECTID", "KEEP_ALL")
&amp;nbsp;&amp;nbsp;&amp;nbsp; ExistsJoin = 1&lt;/PRE&gt;&lt;DIV style="display:none;"&gt; &lt;/DIV&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;4. Finally Update field of F_PORTALES with value of SPATIAL_VIEW&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt; &lt;/SPAN&gt;&lt;PRE class="plain" name="code"&gt;&amp;nbsp;&amp;nbsp; gp.CalculateField_management(PORTALES, "DIS", "[GISTOPOGRAFIA.Portales_SpatialJoin.CODDC]","VB")
&amp;nbsp;&amp;nbsp;&amp;nbsp; gp.CalculateField_management(PORTALES, "SEC", "[GISTOPOGRAFIA.Portales_SpatialJoin_View.CODSC]","VB")&lt;/PRE&gt;&lt;DIV style="display:none;"&gt; &lt;/DIV&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;Ok, in this point I'm receiving error 999999 when using VB syntaxis and error ERROR 000539: Invalid field 'GISTOPOGRAFIA.Portales_SpatialJoin.CODDC', when using PYTHON syntaxis.&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;I have searched the forum for responses but all Found, doesnt works for me. First I try to change the syntax from VB to Python, second I listed the field to put the exact field name in the CalculateField, but nothing works.&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;Also I have the doubt, if with this code, I am updating the original Featureclass or if I am updating an copy of them, because I am being forced to use MakeFeauture, so the AddJoin Work.&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;We also want to know if exists a more simplified way to achieve this goal.&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;Can you give me some help? Thanks.&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;P.D.: Here is all my code:&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt; &lt;/SPAN&gt;&lt;PRE class="plain" name="code"&gt; 

# ---------------------------------------------------------------------------
# CalculoSeccionesMB2.py
# Created on: vie mar 25 2011 10:56:03 
#&amp;nbsp;&amp;nbsp; (generated by ArcGIS/ModelBuilder)
# ---------------------------------------------------------------------------

# Import system modules
import sys, string, os, time

# Importar modulos ArcGIS
import arcgisscripting

# Importar modulos propios
import ASTools
reload(ASTools)

try:

&amp;nbsp;&amp;nbsp;&amp;nbsp; # Leemos parametros de Configuracion
&amp;nbsp;&amp;nbsp;&amp;nbsp; Tools = ASTools.DameParametro("GENERAL","ToolsPath")
&amp;nbsp;&amp;nbsp;&amp;nbsp; ws = ASTools.DameParametro("GENERAL","Workspace")
&amp;nbsp;&amp;nbsp;&amp;nbsp; 

&amp;nbsp;&amp;nbsp;&amp;nbsp; ASTools.EscribeLog("Debug","Hora Inicio: " + time.ctime())
&amp;nbsp;&amp;nbsp;&amp;nbsp; 

&amp;nbsp;&amp;nbsp;&amp;nbsp; # Create the Geoprocessor object
&amp;nbsp;&amp;nbsp;&amp;nbsp; gp = arcgisscripting.create(9.3)
&amp;nbsp;&amp;nbsp;&amp;nbsp; gp.SetProduct("ArcEditor")
&amp;nbsp;&amp;nbsp;&amp;nbsp; #gp.workspace = ws

&amp;nbsp;&amp;nbsp;&amp;nbsp; # Load required toolboxes...
&amp;nbsp;&amp;nbsp;&amp;nbsp; gp.AddToolbox(Tools + "Data Management Tools.tbx")
&amp;nbsp;&amp;nbsp;&amp;nbsp; gp.AddToolbox(Tools + "Analysis Tools.tbx")


&amp;nbsp;&amp;nbsp;&amp;nbsp; # FeatureClasses que se van a necesitar para el proceso
&amp;nbsp;&amp;nbsp;&amp;nbsp; PORTALES = ws +&amp;nbsp; "GISTOPOGRAFIA.Cartografia\\GISTOPOGRAFIA.Portales"
&amp;nbsp;&amp;nbsp;&amp;nbsp; SECCIONES = ws + "GISTOPOGRAFIA.Cartografia\\GISTOPOGRAFIA.Secciones_Censales"
&amp;nbsp;&amp;nbsp;&amp;nbsp; PORTALES_SPATIAL = ws + "GISTOPOGRAFIA.Portales_SpatialJoin"
&amp;nbsp;&amp;nbsp;&amp;nbsp; SPATIAL_VIEW = ws + "GISTOPOGRAFIA.Portales_SpatialJoin_View"
&amp;nbsp;&amp;nbsp;&amp;nbsp; wsTEMP = ws +&amp;nbsp; "GISTOPOGRAFIA.Temp"
&amp;nbsp;&amp;nbsp;&amp;nbsp; F_PORTALES = "Gistopografia.F_Portales"

&amp;nbsp;&amp;nbsp;&amp;nbsp; ExistsSpatial = 0
&amp;nbsp;&amp;nbsp;&amp;nbsp; ExistsJoin = 0


&amp;nbsp;&amp;nbsp;&amp;nbsp; # Borramos los objetos temporales
&amp;nbsp;&amp;nbsp;&amp;nbsp; #gp.Delete_management(PORTALES_SPATIAL, "")

&amp;nbsp;&amp;nbsp;&amp;nbsp; # Process: Spatial Join...
&amp;nbsp;&amp;nbsp;&amp;nbsp; gp.SpatialJoin_analysis(PORTALES, SECCIONES, PORTALES_SPATIAL, "JOIN_ONE_TO_ONE", "KEEP_ALL", "NUMERO 'NUMERO' true true false 3 Text 0 0 ,First,#," + PORTALES + ",NUMERO,-1,-1;LETRA 'LETRA' true true false 12 Text 0 0 ,First,#," + PORTALES + ",LETRA,-1,-1;INCIDENCIA 'INCIDENCIA' true true false 100 Text 0 0 ,First,#," + PORTALES + ",INCIDENCIA,-1,-1;TEXT 'TEXT' true true false 10 Text 0 0 ,First,#,"&amp;nbsp; + PORTALES +&amp;nbsp; ",TEXT,-1,-1;NUM 'NUM' true true false 10 Text 0 0 ,First,#," + PORTALES + ",NUM,-1,-1;BIS 'BIS' true true false 10 Text 0 0 ,First,#," + PORTALES + ",BIS,-1,-1;BLOQ 'BLOQ' true true false 10 Text 0 0 ,First,#," + PORTALES + ",BLOQ,-1,-1;PORTAL 'PORTAL' true true false 10 Text 0 0 ,First,#," + PORTALES + ",PORTAL,-1,-1;DIS 'DIS' true true false 10 Text 0 0 ,First,#," + PORTALES + ",DIS,-1,-1;SEC 'SEC' true true false 10 Text 0 0 ,First,#," + PORTALES + ",SEC,-1,-1;CODPOSTAL 'CODPOSTAL' true true false 5 Text 0 0 ,First,#," + PORTALES + ",CODPOSTAL,-1,-1;CUN 'CUN' true true false 10 Text 0 0 ,First,#," + PORTALES + ",CUN,-1,-1;CODIGOTRAM 'CODIGOTRAM' true true false 4 Long 0 9 ,First,#," + PORTALES + ",CODIGOTRAM,-1,-1;CROQUIS 'CROQUIS' true true false 255 Text 0 0 ,First,#," + PORTALES + ",CROQUIS,-1,-1;CODMUNI 'CODMUNI' true true false 5 Text 0 0 ,First,#," + SECCIONES + ",CODMUNI,-1,-1;CODDC 'CODDC' true true false 2 Text 0 0 ,First,#," + SECCIONES + ",CODDC,-1,-1;CODSC 'CODSC' true true false 3 Text 0 0 ,First,#," + SECCIONES + ",CODSC,-1,-1;CODIGO 'CODIGO' true true false 10 Text 0 0 ,First,#," + SECCIONES + ",CODIGO,-1,-1;TOTAL 'TOTAL' true true false 8 Double 8 38 ,First,#," + SECCIONES + ",TOTAL,-1,-1;CODDCSC 'CODDCSC' true true false 5 Text 0 0 ,First,#," + SECCIONES + ",CODDCSC,-1,-1;AREA 'AREA' false true true 8 Double 8 38 ,First,#," + SECCIONES + ",GISTOPOGRAFIA.Secciones_Censales.AREA,-1,-1;LEN 'LEN' false true true 8 Double 8 38 ,First,#," + SECCIONES + ",GISTOPOGRAFIA.Secciones_Censales.LEN,-1,-1;SHAPE_AREA 'SHAPE_AREA' false false true 0 Double 0 0 ,First,#," + SECCIONES + ",SHAPE.AREA,-1,-1;SHAPE_LEN 'SHAPE_LEN' false false true 0 Double 0 0 ,First,#," + SECCIONES + ",SHAPE.LEN,-1,-1", "IS_WITHIN", "0 Meters", "")
&amp;nbsp;&amp;nbsp;&amp;nbsp; ExistsSpatial = 1

&amp;nbsp;&amp;nbsp;&amp;nbsp; ASTools.EscribeLog("Debug","1. Relacion espacial Creada")


&amp;nbsp;&amp;nbsp;&amp;nbsp; # Process: Make Table View...
&amp;nbsp;&amp;nbsp;&amp;nbsp; gp.MakeTableView_management(PORTALES_SPATIAL, SPATIAL_VIEW, "", "", "Join_Count Join_Count VISIBLE NONE;NUMERO NUMERO VISIBLE NONE;LETRA LETRA VISIBLE NONE;INCIDENCIA INCIDENCIA VISIBLE NONE;TEXT TEXT VISIBLE NONE;NUM NUM VISIBLE NONE;BIS BIS VISIBLE NONE;BLOQ BLOQ VISIBLE NONE;PORTAL PORTAL VISIBLE NONE;DIS DIS VISIBLE NONE;SEC SEC VISIBLE NONE;CODPOSTAL CODPOSTAL VISIBLE NONE;CUN CUN VISIBLE NONE;CODIGOTRAM CODIGOTRAM VISIBLE NONE;CROQUIS CROQUIS VISIBLE NONE;CODMUNI CODMUNI VISIBLE NONE;CODDC CODDC VISIBLE NONE;CODSC CODSC VISIBLE NONE;CODIGO CODIGO VISIBLE NONE;TOTAL TOTAL VISIBLE NONE;CODDCSC CODDCSC VISIBLE NONE;AREA AREA VISIBLE NONE;LEN LEN VISIBLE NONE;SHAPE_AREA SHAPE_AREA VISIBLE NONE;SHAPE_LEN SHAPE_LEN VISIBLE NONE")
&amp;nbsp;&amp;nbsp;&amp;nbsp; ASTools.EscribeLog("Debug","2. Vista Spatial Creada")

&amp;nbsp;&amp;nbsp;&amp;nbsp; gp.MakeFeatureLayer_management(PORTALES, F_PORTALES, "", wsTEMP, "NUMERO NUMERO VISIBLE NONE;LETRA LETRA VISIBLE NONE;INCIDENCIA INCIDENCIA VISIBLE NONE;TEXT TEXT VISIBLE NONE;NUM NUM VISIBLE NONE;BIS BIS VISIBLE NONE;BLOQ BLOQ VISIBLE NONE;PORTAL PORTAL VISIBLE NONE;DIS DIS VISIBLE NONE;SEC SEC VISIBLE NONE;CODPOSTAL CODPOSTAL VISIBLE NONE;CUN CUN VISIBLE NONE;CODIGOTRAM CODIGOTRAM VISIBLE NONE;CROQUIS CROQUIS VISIBLE NONE")&amp;nbsp;&amp;nbsp;&amp;nbsp; 
&amp;nbsp;&amp;nbsp;&amp;nbsp; ASTools.EscribeLog("Debug","2.1 Vista Portales Creada")


&amp;nbsp;&amp;nbsp;&amp;nbsp; # Process: Add Join...
&amp;nbsp;&amp;nbsp;&amp;nbsp; gp.AddJoin_management(F_PORTALES, "OBJECTID", SPATIAL_VIEW, "OBJECTID", "KEEP_ALL")
&amp;nbsp;&amp;nbsp;&amp;nbsp; ExistsJoin = 1
&amp;nbsp;&amp;nbsp;&amp;nbsp; ASTools.EscribeLog("Debug","3. Relacion BD Creada")

&amp;nbsp;&amp;nbsp;&amp;nbsp; fields = gp.listfields(F_PORTALES)
&amp;nbsp;&amp;nbsp;&amp;nbsp; print [ (f.name + " " + f.type + " " + str(f.length))&amp;nbsp; for f in fields]

&amp;nbsp;&amp;nbsp;&amp;nbsp; # Process: Calculate Field..&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; GISTOPOGRAFIA.Portales_SpatialJoin.CODDC
&amp;nbsp;&amp;nbsp;&amp;nbsp; gp.CalculateField_management(PORTALES, "DIS", "!GISTOPOGRAFIA.Portales_SpatialJoin.CODDC!","Python")
&amp;nbsp;&amp;nbsp;&amp;nbsp; gp.CalculateField_management(PORTALES, "SEC", "[GISTOPOGRAFIA.Portales_SpatialJoin_View.CODSC]","VB")
&amp;nbsp;&amp;nbsp;&amp;nbsp; 
&amp;nbsp;&amp;nbsp;&amp;nbsp; #gp.CalculateField_management(PORTALES, "DIS", "3")
&amp;nbsp;&amp;nbsp;&amp;nbsp; #gp.CalculateField_management(PORTALES, "SEC", "4")
&amp;nbsp;&amp;nbsp;&amp;nbsp; ASTools.EscribeLog("Debug","4. Campos Actualizados")
&amp;nbsp;&amp;nbsp;&amp;nbsp; 

&amp;nbsp;&amp;nbsp;&amp;nbsp; # Borramos los objetos temporales
&amp;nbsp;&amp;nbsp;&amp;nbsp; #gp.RemoveJoin_management(SPATIAL_VIEW, PORTALES)
&amp;nbsp;&amp;nbsp;&amp;nbsp; gp.Delete_management(PORTALES_SPATIAL, "")
&amp;nbsp;&amp;nbsp;&amp;nbsp; del gp
&amp;nbsp;&amp;nbsp;&amp;nbsp; ASTools.EscribeLog("Debug","5. Proceso finalizado Correctamente")

&amp;nbsp;&amp;nbsp;&amp;nbsp; ASTools.EscribeLog("Debug","Hora Fin:" + time.ctime())

except:
&amp;nbsp;&amp;nbsp;&amp;nbsp; ASTools.EscribeLog("Critical","ERROR EN EL PROCESO.")
&amp;nbsp;&amp;nbsp;&amp;nbsp; gp.AddMessage(gp.GetMessages(2))
&amp;nbsp;&amp;nbsp;&amp;nbsp; ASTools.EscribeLog("Critical",gp.GetMessages(2))
&amp;nbsp;&amp;nbsp;&amp;nbsp; if (ExistsJoin == 1):
&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; gp.RemoveJoin_management(SPATIAL_VIEW,PORTALES)
&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; gp.Delete_management(PORTALES_SPATIAL, "")&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; 
&amp;nbsp;&amp;nbsp;&amp;nbsp; else:
&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; if (ExistsSpatial == 1):
&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; gp.Delete_management(PORTALES_SPATIAL, "")
&amp;nbsp;&amp;nbsp;&amp;nbsp; del gp
&amp;nbsp;&amp;nbsp;&amp;nbsp; ASTools.EscribeLog("Debug","Hora Fin:" + time.ctime())


&lt;/PRE&gt;&lt;DIV style="display:none;"&gt; &lt;/DIV&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Thu, 07 Apr 2011 10:25:40 GMT</pubDate>
      <guid>https://community.esri.com/t5/python-questions/error-when-using-calculatefield-management/m-p/154980#M11970</guid>
      <dc:creator>FernandoMons</dc:creator>
      <dc:date>2011-04-07T10:25:40Z</dc:date>
    </item>
    <item>
      <title>Re: Error when using CalculateField_Management</title>
      <link>https://community.esri.com/t5/python-questions/error-when-using-calculatefield-management/m-p/154981#M11971</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;SPAN&gt;Try using your feature layer (F_PORTALES) as the input for the CalculateField tool, instead of the original feature class (PORTALES)?&lt;/SPAN&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Fri, 08 Apr 2011 14:29:42 GMT</pubDate>
      <guid>https://community.esri.com/t5/python-questions/error-when-using-calculatefield-management/m-p/154981#M11971</guid>
      <dc:creator>ZoeZaloudek</dc:creator>
      <dc:date>2011-04-08T14:29:42Z</dc:date>
    </item>
    <item>
      <title>Re: Error when using CalculateField_Management</title>
      <link>https://community.esri.com/t5/python-questions/error-when-using-calculatefield-management/m-p/154982#M11972</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;SPAN&gt;Hello,&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;Efectively the Calculatefield_management code was wrong. I was using PORTALES when te correct is F_PORTALES.&amp;nbsp; I supose the amount of tries i did, I changed this and not rollbacked it, before post to the forum.&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;But&amp;nbsp; using the correct code, the same error raises:&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;&amp;gt;&amp;gt;&amp;gt; Unhandled exception while debugging...&lt;/SPAN&gt;&lt;BR /&gt;&lt;SPAN&gt;Traceback (most recent call last):&lt;/SPAN&gt;&lt;BR /&gt;&lt;SPAN&gt;&amp;nbsp; File "\\SAytofich\carpetasgrupos\...\Python Scripts\CalculoSecciones.py", line 76, in &amp;lt;module&amp;gt;&lt;/SPAN&gt;&lt;BR /&gt;&lt;SPAN&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; gp.CalculateField_management(F_PORTALES, "DIS", "!GISTOPOGRAFIA.Portales_SpatialJoin.CODDC!","Python")&lt;/SPAN&gt;&lt;BR /&gt;&lt;SPAN&gt;ExecuteError: ERROR 999999: Error executing function.&lt;/SPAN&gt;&lt;BR /&gt;&lt;SPAN&gt;Failed to execute (CalculateField).&lt;/SPAN&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Mon, 11 Apr 2011 08:01:22 GMT</pubDate>
      <guid>https://community.esri.com/t5/python-questions/error-when-using-calculatefield-management/m-p/154982#M11972</guid>
      <dc:creator>FernandoMons</dc:creator>
      <dc:date>2011-04-11T08:01:22Z</dc:date>
    </item>
    <item>
      <title>Re: Error when using CalculateField_Management</title>
      <link>https://community.esri.com/t5/python-questions/error-when-using-calculatefield-management/m-p/154983#M11973</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;SPAN&gt;Hello fmonsn,&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;SPAN&gt;I was getting the same error message with the CalculateField tool and with the help of a co-worker I found a solution. This may or may not help because i'm not too sure if your fields are area or length based. It turns out it's best to use &lt;/SPAN&gt;&lt;A href="http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//000v0000002r000000" rel="nofollow noopener noreferrer" target="_blank"&gt;Describe&lt;/A&gt;&lt;SPAN&gt; on feature class properties in the GDB before trying to calculate with an expression to convert the value to a different unit of measure. Here is some code inside a function that helped my script stop throwing ERROR 000539.&lt;/SPAN&gt;&lt;BR /&gt;&lt;BR /&gt;&lt;PRE class="lia-code-sample line-numbers language-none"&gt;def CalcAreaHa(dataIn,haField):
&amp;nbsp;&amp;nbsp;&amp;nbsp; if not arcpy.ListFields(dataIn, haField):
&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; arcpy.AddField_management(dataIn, haField, "DOUBLE","","4") 
&amp;nbsp;&amp;nbsp;&amp;nbsp; desc = arcpy.Describe(dataIn)
&amp;nbsp;&amp;nbsp;&amp;nbsp; ftype = desc.ShapeType
&amp;nbsp;&amp;nbsp;&amp;nbsp; if ftype == 'Polygon':
&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; areaItem = desc.areaFieldName&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; 
&amp;nbsp;&amp;nbsp;&amp;nbsp; if areaItem == 'GEOMETRY_Area':
&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; arcpy.CalculateField_management(dataIn,haField,"!geometry.area@HECTARES!", "PYTHON_9.3")
&amp;nbsp;&amp;nbsp;&amp;nbsp; else:
&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; arcpy.CalculateField_management(dataIn,haField,"!shape.area@HECTARES!", "PYTHON_9.3")&lt;/PRE&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Sat, 11 Dec 2021 08:15:16 GMT</pubDate>
      <guid>https://community.esri.com/t5/python-questions/error-when-using-calculatefield-management/m-p/154983#M11973</guid>
      <dc:creator>DanaDiotte1</dc:creator>
      <dc:date>2021-12-11T08:15:16Z</dc:date>
    </item>
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