Difference between CreatePackage and CreatePackageOneStep

Looking into the SDK source, it appears that "createPackage" calls the packageService and creates the package, then, uploads the documents afterwards, to the created package. With "createPackageOneStep", the documents are prepared to be uploaded, then, passed to the packageService along with the APIPackage where they are passed through one multipart post call to create the package and upload the documents all in one step. Hope this helps.

Thank you, that is helpful. So it seems CreatePackageOneStep will be the most efficient method and should be preferred above the other, if documents are included when the package is created.

I will note, there is a warning with the OneStep method: WARNING: DOES NOT WORK WHEN SENDER HAS A SIGNATURE

Good to know. So if I understand correctly, if the API key used to create the package is not not associated to a signer of a document in the package then the package should be created as expected.

I haven't tried it, yet, but that's how I read it, as well. Let me know if you have issues, I'll look into it further.