# How to Cancel a Usage Decision in SAP QM > Source: https://netray.co/erp-help/how-to-cancel-usage-decision-in-sap-qm > Publisher: Netray (netray.co), AI and integration engineering for ERP and manufacturing systems. > Section: ERP Help ## Short answer SAP QM does not delete a usage decision, you change or reset it. Open QA12 (Change Usage Decision) for the inspection lot, and use the reset or change function if your release and authorization allow it. Stock already posted by the original decision is adjusted by the system, but only if the stock is still where the posting put it. ## Kind how-to ## System sap ## Erp SAP ERP / S/4HANA ## Module QM / Usage Decision ## Query how to cancel usage decision in sap qm ## Alternate Queries - reverse usage decision sap qm - qa12 change usage decision - undo usage decision inspection lot sap ## Applies To SAP ECC 6.0 and S/4HANA QM; available functions depend on release, authorizations and configuration ## Steps ### Reverse or change a usage decision **Items:** - Confirm the lot is the right one in QA03 and note its status, stock posting and any follow-up actions already triggered. - Check you hold the authorization to change usage decisions. Without it QA12 will be display only. - Run QA12 for the inspection lot. The screen shows the existing usage decision, code and stock posting. - Use the available reset or cancel function, or change the code and quality score to the correct decision, depending on what your release offers. - If a stock posting was made, review the proposed stock reposting. The system reposts the quantity difference between the old and new decision. - Save. Check the material document list and the lot stock overview to confirm the stock moved as expected. - If the system refuses, resolve the blocking cause first, then repeat. ## Sections ### Change versus cancel **Body:** In practice, correcting a decision means opening it in QA12 and either changing the code or resetting its status so the lot becomes open for a new decision. The decision is a business document, so SAP keeps a history rather than erasing it. What you can do depends on release, configuration and authorizations, so test it in a sandbox before promising users a specific button. The principle is the same: you reverse the effect, you do not delete the past. ### Stock effects **Body:** The original usage decision posts stock from quality inspection to unrestricted, blocked, scrap or another destination. Changing the decision posts the opposite movements for the difference. If you accepted 100 and now reject, the system tries to move the stock back through quality inspection or to the new destination. This only works if the stock is still there. If the 100 units were already issued to production or shipped, the reposting fails or leaves a negative. Handle those cases with a normal inventory process and a quality notification. ### What blocks the change **Body:** Common blocks are missing authorization, a lot with the status for a closed usage decision with subsequent documents, stock already consumed, batch status or classification already changed by the first decision, and follow-up actions that cannot be reversed automatically. Read the message text in QA12. It usually names the object. If it points to a stock posting, check the material document; if to a batch, check its classification and status. Involve inventory control before forcing any manual correction. ## Pitfalls - Trying to delete the decision instead of changing it. - Changing the decision after the goods were consumed or shipped. - Forgetting that batch status or class values were updated by the first decision. - Not recording why, which makes audits difficult. - Testing only in the development client with simple data. ## Ai Angle A private AI layer can read the lot, usage decision history and material documents for a lot and explain in plain language why QA12 refuses to change it, including what stock moved after the decision. The correction itself is still made by an authorised user in SAP. ## Faq ### Can I delete a usage decision in SAP? **Answer:** Not in the sense of erasing it. You reverse its effect with QA12 by changing or resetting it, and SAP keeps the history. What is possible depends on release, configuration and your authorizations. ### What happens to stock when I change the decision? **Answer:** The system posts the difference between the old and new decision. If stock is still where the original posting put it, the reposting works. If it has been consumed or moved, the change may fail. ### Why is QA12 only showing display mode? **Answer:** Most often you lack the authorization to change usage decisions, or the lot status prevents it. Check authorization objects with your security team and the lot status in QA03. ### Which transaction is used? **Answer:** QA12 changes the usage decision and QA11 records it for the first time. QA03 shows the lot and its status, and the material document list shows the stock postings. ## Search terms how to cancel usage decision in sap qm, reverse usage decision sap, qa12 change usage decision, undo usage decision, sap qm usage decision stock posting, reset usage decision sap, sap inspection lot usage decision, sap qm correction --- Talk to an engineer: https://netray.co/contact?intent=erp_ai | Machine catalog: https://netray.co/agent/catalog.json