Geoprocessing Task Submits successfully, but nothing happens.

[WilliamKimrey]

Hello all,

I've published a model that works just fine in ArcMAP/ArcCatalog, and it executes successfully when run from my services webpage or in my Silverlight application.  However, when I run it from the webpage or SL, nothing happens.  The changes that the model is supposed to make do not happen.

For clarity,  it's a simple model that takes 2 parameters:
1) String that is used to select the required features:  "OBJECTID = 1234"
2) String that is replacing a current value using the 'Calculate Field' tool: "1234567890"

Even though the 2 parameters are strings, the 2nd parameter is actually a GUID.  I thought this might be a problem, but like I said, it works just fine in ArcMAP/ArcCatalog.

I'm trying this approach because I really really really need to be able to edit a non-unique GUID field through a webservice in someway or another.  This is about the 4th option I've tried and this is my last option before we have to completely redo the schema of 1/4 of our database just so we can switch the GUID field to something else so we can edit with REST services normally.

Please let me know if you have any suggestions that can help me out.
Thanks,
Will

[JenniferNery]

If you can submit geoprocessing task outside your SL app and still get the same odd behavior of the task completing successfully without applying the supposed updates, you might get better response from ArcGIS Desktop team. I can only guess that there's something wrong with the model you published or maybe the input parameters were incorrect but you say that task completes successfully too so it's really hard to guess. Do you also subscribe to Failed event? You can also use Fiddler to see what requests/response are exchanged between the browser and your service.