Engineering changes
A change number determines from which day BOM and routing revisions become valid. If a number is selected when a revision is published, the revision is valid from the number's valid-from date; until that day the previous revision remains effective. MRP explodes a planned order with the BOM valid on its start date.
A change request (numbered DTL-) records the reason for the change, its impact and the objects it affects; when
approved, it opens the change number itself.
/erp/manufacturing/engineering-changeserp-manufacturing-engineering-changes.view (görme) · .create (değişiklik numarası ve talep açma) · .edit (değiştirme, kilitleme)Engineering Changes list
- 1New change number
- 2Valid-from date of the number
- 3Revisions released with it
- 4Active or Locked
| Column | Meaning |
|---|---|
| Değişiklik No (Change No.) | MDN-yyyy-nnnnnn; assigned on save. |
| Başlık (Title) | Short name of the change. |
| Geçerlilik (Validity) | The first day on which revisions published with the number are valid. |
| Revizyon (Revisions) | The number of revisions published with this number. |
| Durum (Status) | Etkin (Active) or Kilitli (Locked). |
| Oluşturan (Created By) | The user who opened the number. |
The Değişiklik Numarası Oluştur (Create Change Number) form: Başlık (Title), Değişiklik nedeni (Reason for change) (both required), Geçerlilik başlangıcı (Valid from; required). Details: Create an engineering change.
Statuses and actions
| Status | Meaning | Actions (in the details) |
|---|---|---|
| Etkin (Active) | Can be selected in the publish window. | Değiştir (Change; title, reason, date), Kilitle (Lock). |
| Kilitli (Locked) | Cannot be selected when publishing a new revision; releases already made with this number remain valid. | Değiştir (Change), Kilidi Kaldır (Unlock). |
The details page shows Durum (Status), Başlık (Title), Geçerlilik başlangıcı (Valid from; Yürürlükte (In effect) if it has taken effect), Oluşturan (Created By), Değişiklik nedeni (Reason for change) and Nesne Listesi — Ürün Ağacı Revizyonları (Object List — BOM Revisions; the revisions published with this number).
Rules for changing the validity date:
- If the number has taken effect and is in use, the date cannot be changed; open a new change number.
- Moving the date also moves the revisions published with the number; it cannot be moved into the past.
- Validity follows the revision sequence: a revision cannot become valid earlier than the previous revision or later than the next revision.
Change Requests
- 1New change request
- 2Draft, Pending Approval, Approved…
- 3Number opened on approval
| Column | Meaning |
|---|---|
| Talep (Request) | DTL-yyyy-nnnnnn. |
| Başlık, Durum (Title, Status) | The request's name and status. |
| Önerilen Geçerlilik (Proposed Validity) | The day proposed by the requester; on approval it becomes the validity of the number opened. |
| Değişiklik No (Change No.) | The MDN- number opened on approval. |
| Nesne (Objects) | Number of affected objects. |
| Açan (Opened By) | The user who opened the request. |
The Değişiklik Talebi Aç (Open Change Request) form: Başlık (Title), Neden (Reason; required), Etki notu (Impact note; cost, stock, open orders…), Önerilen geçerlilik (Proposed validity; required) and Etkilenen Nesneler (Affected Objects) — select the object type (Ürün ağacı (BOM), Rota (Routing), Ürün (Product)) and add a record with Nesne ekle (Add object); at least one object is required. Taslağı Kaydet (Save Draft) saves the request as Taslak (Draft).
- 1Submit — for approval or approved directly
- 2Edit — draft only
- 3Cancel
- 4Change number is opened on approval
Request statuses
| Status | Actions |
|---|---|
| Taslak (Draft) | Düzenle (Edit), Gönder (Submit), İptal Et (Cancel). |
| Onay Bekliyor (Pending Approval) | Approver: Onayla (Approve) or Reddet (Reject; rejection reason required; the request returns to Taslak (Draft)). İptal Et (Cancel). |
| Onaylandı (Approved) | No actions; the MDN- number opened is shown in the Değişiklik numarası (Change number) field. |
| İptal (Cancelled) | No actions. |
- Gönder (Submit): if an approval template for change requests is defined in the setup, the request becomes Onay Bekliyor (Pending Approval); if not, it becomes Onaylandı (Approved) directly and the change number is opened immediately (in the demo environment DTL-2026-000001 → MDN-2026-000002).
- You cannot approve a request you opened yourself; another approver makes the decision.
- An approved or cancelled request cannot be cancelled.
Effect on revision release
- The Değişiklik numarası (Change number) selector in the publish windows of the BOM, routing and component management screens lists only Etkin (Active) numbers; leaving it blank means "valid from today".
- If an approved request is required in Üretim Ayarları (Production Settings), a revision can be published only with a number opened from an approved request.
Common messages
| Message | English meaning | Cause |
|---|---|---|
| MDN-… kilitli — yeni yayında kullanılamaz. | MDN-… is locked — it cannot be used for a new release. | A locked number was selected; use Kilidi Kaldır (Unlock) or another number. |
| Revizyon yalnız onaylı bir değişiklik talebinin numarasıyla yayınlanır (Üretim Ayarları) — talep açıp onaylatın. | A revision can be published only with the number of an approved change request (Production Settings) — open a request and have it approved. | The setting is on and no number was selected. |
| MDN-… onaylı bir değişiklik talebinden açılmadı — yayın için onaylı talebin numarası gerekir. | MDN-… was not opened from an approved change request — releasing requires the number of an approved request. | The setting is on and the number was opened manually. |
| MDN-… gg.aa.yyyy tarihinde yürürlüğe girdi — geçerlilik tarihi değiştirilemez; yeni bir değişiklik numarası açın. | MDN-… took effect on dd.mm.yyyy — the validity date cannot be changed; open a new change number. | An attempt was made to change the date of a number in effect. |
| Kullanımdaki değişikliğin geçerliliği geçmişe alınamaz. | The validity of a change in use cannot be moved into the past. | The date was moved into the past. |
| Revizyon N gg.aa.yyyy tarihinden geçerli olamaz — önceki revizyon M gg.aa.yyyy tarihinden geçerli; geçerlilik revizyon sırasıyla ilerler. | Revision N cannot be valid from dd.mm.yyyy — the previous revision M is valid from dd.mm.yyyy; validity follows the revision sequence. | The number's date is earlier than the previous revision. |
| Talep en az bir etkilenen nesne (ürün ağacı, rota ya da ürün) taşır. | A request must have at least one affected object (BOM, routing or product). | No object was added. |
| Kendi açtığınız değişiklik talebini onaylayamazsınız. Kararı başka bir onaycı vermeli. | You cannot approve a change request you opened yourself. Another approver must make the decision. | Self-approval was attempted. |
| Red gerekçesi zorunludur. | A rejection reason is required. | Rejection without a reason. |
| DTL-… taslak değil — değiştirilemez. | DTL-… is not a draft — it cannot be changed. | An attempt was made to edit a submitted request. |