Access changes of a Purchase Order through a Requirement Output Control

Hello everyone,

When a user changes a Purchase Order (ME22N), I must compare the saved purchased order's items with the previous version of those items to determine if an output must be produced or not.

I do this through the Requirement Output Control (VOFM) for application EF in form KOBEV_903 for Include RV61B903.

Here is my question: How can I compare the changed Purchase Order items with the items before the changes?

- I searched the available global variables, but I can't find "before changes" tables or variables.

- I searched these forums and cannot find a similar question.

Any help is welcome, thank you.

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