Removing signatures in a digital signature field

Hi all, I have a question relating to the topic above that i hope
you guys can help me with;
1) Is it possible to remove digital signatures from form? For instance
if you have a form going thru several approval steps that requires
signatures, and then one step happened to reject, it would be nice to
remove the previous signatures so that they could be re-signed.
2) And finally is there a simpler way to combine digital signatures
and rights management then what was listed in the pdf provided by
Duane (second post from the bottom of the thread)? When creating a policy there is
a checkbox for "Filling in form fields and signing". Is this forsomething else?
Thanks!
Billy

Hi all, came accross a few other problems and hopefully someone can
help me out,
I've managed to place digital signatures on a form and I used a custom renderer to apply a policy for rights management. I used a Document
Form type variable in the process and specified that the form should only be rendered once. Now at some point in my process I wanted to
remove a signature so I tried to use the Clear signature field service. When i run it however i get a stall and an error in my logs
saying "The input PDF is encrypted using APS and could not be opened, hence the operation clearSignatureField can not be performed on Signature Field ConsultantSig. (in the operation : clearSignatureField)"
So figure, ah well, thats cool, i'll just remove the policy as I figured thats what was encrypting it. So i threw in a Remove Policy service and then i get another error in my logs saying that
Cannot coerce object:
<document state="passive" senderVersion="3" persistent="true"
senderPersistent="false" passivated="true" senderPassivated="true"
deserialized="true" senderHostId="127.0.0.1/10.37.129.2/192.168.0.143"
callbackId="0" senderCallbackId="54" callbackRef="IOR:
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
isLocalizable="true" isTransactionBound="false"
defaultDisposalTimeout="600" disposalTimeout="600"
maxInlineSize="65536" defaultMaxInlineSize="65536" inlineSize="0"
contentType="null" length="85284"><cacheId/><localBackendId/
><globalBackendId><DocumentFileID fileName="C:\Adobe\LiveCycle8.2\jboss
\server\all\svcnative\DocumentStorage
\docm1247766543265\66d5bdad216c55badc57fc5b86f44086"/><globalBackendId/
><senderLocalBackendId/><senderGlobalBackendId/><inline/
><senderPullServantJndiName>adobe/idp/DocumentPullServant/
adobejb_server1</senderPullServantJndiName><attributes/></document> of
type: com.adobe.idp.Document to type: class
com.adobe.idp.taskmanager.form.impl.binarycontent.BinaryContentFormInstance
ALC-DSC-119-000: com.adobe.idp.dsc.util.InvalidCoercionException:
Cannot coerce object: <document state="passive" senderVersion="3"
persistent="true" senderPersistent="false" passivated="true"
senderPassivated="true" deserialized="true"
senderHostId="127.0.0.1/10.37.129.2/192.168.0.143" callbackId="0"
senderCallbackId="54" callbackRef="IOR:
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
isLocalizable="true" isTransactionBound="false"
defaultDisposalTimeout="600" disposalTimeout="600"
maxInlineSize="65536" defaultMaxInlineSize="65536" inlineSize="0"
contentType="null" length="85284"><cacheId/><localBackendId/
><globalBackendId><DocumentFileID fileName="C:\Adobe\LiveCycle8.2\jboss
\server\all\svcnative\DocumentStorage
\docm1247766543265\66d5bdad216c55badc57fc5b86f44086"/><globalBackendId/
><senderLocalBackendId/><senderGlobalBackendId/><inline/
><senderPullServantJndiName>adobe/idp/DocumentPullServant/
adobejb_server1</senderPullServantJndiName><attributes/></document>
of type: com.adobe.idp.Document to type: class com.adobe.idp.taskmanager.form.impl.binarycontent.BinaryContentFormInstance
Oh great, a conversion problem when i try to remove the policy! Incidently i get this same conversion problem when i try to remove a signature using the Clear Signature on a form that has NOT had any policy placed on it at all.
So basically, to sum up these are the main issues
1) Can digital signatures be removed from a form that has a policy placed on it, or do i have to remove the policy first?
2) Why am i getting these coercion errors? As i understood it using a Document Form variable is the correct way to go. What should i do to resolve this?
So can anyone shed a little light on this?
Thanks
Billy

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Niraj
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