Multiple digital signatures in a pdf form?

I'm creating an adobe pdf form that requires multiple approvers (one after the other) to digitally sign the form. However, once the second person digitally signs the form, the first person's signature will become invalid because the addition of the second signature is not signed by the first person.
Is it possible to digitally sign the pdf form excluding the signatures? and how to allow multiple signature in a pdf form while ensuring the form integrity?

Hi,
I doubt that the addition of a second signature actually invalidates (the red X icon) the first signature, but rather it shows the signature as Valid with Changes (the pen & yellow triangle icon). Technically, that is the correct signature status, but because it caused so much confusion, beginning with version 9, we've changed the user interface and stopped indicating changes to the PDF if the only change is a subsequent signature.
If on the other hand you are getting the red X for the first signature please let me know as I'd be curious to see the file.
Steve

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Steve

Multiple digital signatures in a pdf form?

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