Customize seeded ESS job 'Communicate Purchasing Documents'

Summary:

Hi,

We want to avoid using the seeded ESS Job 'Communicate Purchasing Documents' and would like to customize it as the seeded one sends communication for all PO's, on approval. Our business requirement is to exclude POs created against BPA and CPA from communication to supplier which cannot be achieved with seeded job. How can we get the source code of the seeded Java Type ESS Job 'Communicate Purchasing Documents', to customize it to override the seeded job when PO is approved.

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