AP Invoice approval in Serial and Parallel types

Summary:

We have implemented AP Invoice approval in Serial and parallel types of the same BU, system initiates the approval in both heads at once when approval initiated.

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For example, we have configured hierarchy; once approval is initiated, it should go to Mr. A in Serial , and then to Mr. B and C. in parallel. But system is assinging the approval to all the approvers.
But the system is assigning the approval to all the approvers.

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