1. It is often encountered in the project to control the version of the material. When a change is made, the material needs to be upgraded. At this time, it is necessary to consider how to upgrade the material. We can see it when changing the material in MM02 Below is the change number.
2. This change number is what we often call the ECN number.
3. The latest material version storage table in the material master data and the material version storage table of the front-end business data The
material version storage table in the material master data: AEOI/AENR table, where AEOI-AETYP is 41 (indicating materials), AENR- OBJKT is the actual material number; the material version is associated with the material ECN number and the effective date; the
front-end business data-material version (field: REVLV) is stored in the storage table
PLAF-planned order, AFKO-production order, EBAN-purchase requisition, EKPO - Purchase Order
MDTB-MRP Form, RSEB-Requirement Form.
Remarks: When MIGO is used for goods receipt posting, the version is stored in the posting document line field GOITEM-REVLV. If you want to use batch management to distinguish the version inventory, you can store the version GOITEM-REVLV in the batch management field when receiving goods.
4. How to assign a material version
Use CC01 to create an ECN engineering change number, check the material master data change and the corresponding BOM/process route, and obtain the corresponding ECN engineering change number. According to the ECN engineering change number, in CC11, according to the material number + ECM number, the system automatically determines the version according to the background configuration, so that the engineering change management is defined in the material of the defined version.
5. The impact of the effective date of the material version on its business data
When the change of the material version from one material version to another is completed, the effective start date of the ECM needs to be managed. Please note that when the revision of the material master is changed, this has no effect on the purchasing documents already created, these documents will still show the old revision level and need to be changed manually.
Material revisions also have an impact on MRP calculations, when new material revisions become active, it will be displayed in the MD04 screen. Newly created purchase requirements or schedule lines will have a new version number after the effective date of material version change.
6. Material version-related configuration points and transaction code
CC11 creates material version, CC12 changes material version, CC13 displays material version, OS55 configures material version, OS54ECM (engineering change) configuration point, OS53 ECM number, OS27 defines BOM The modified parameters.
7. Configuration point: SPRO-engineering change management-version-defining material version
Explanation: The meaning of this configuration point is. When upgrading the version, what is the rule? The first version is A, and the second version is B. It can be changed manually with a maximum of two digits. 8. Configuration points: SPRO-Engineering Change Management-Setting
Control
Data
9 、 CC01 creates ECN number: 500000001, then MM02 changes the material upgrade
and then creates an ECN number 500000002. Use mm02 to upgrade the material to see the version change. Here you can see that the version has changed from A to B 
10, and the version is reflected in the business scenario. The latest version of the material can be seen in the production order
The information of the latest version of the material can be withdrawn in both the purchase requisition and the purchase order
