I had a problem with unrelease po after gr. After release PO I tried to GR it. But i can unrelease that PO. How to block it, so it can't be unreleased if there was GR upon it.
Its different what my question, in that thread means that It can't be changed if in full release in PO so it can be changed with ME22N. But in my chase, if there is GR upon PO. it can be unreleased/dereleased in PO with ME29N. I dont know how to block it.
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