Duplicate master data rarely comes from one big mistake. It comes from many small ones: two spellings of the same name, a missing field, a rushed request. The result is the same everywhere: stock split across two items, spend split across two vendors, and reports that do not agree with each other.
Cleaning up later is expensive. Preventing is cheaper. These five habits do most of the work.
1. Give every data object an owner
Materials, vendors and customers each need a named owner who can approve and, just as important, say no. Without an owner, everyone creates and nobody cleans.
2. Write naming and unit standards on one page
Agree on a description pattern, accepted abbreviations, base units of measure and categories. Add a few good and bad examples. If the rules are too long to read in five minutes, they will not be followed.
3. Make the request form the only door
Route every creation and change through one request form with mandatory fields and validation rules. Where direct creation in SAP must remain, limit it by role. Every extra door is another place where duplicates are born.
4. Check for duplicates before creating, not after
Search for similar records while the request is being filled in, and show them to the requester. Useful keys include:
- Materials: description, manufacturer, part number
- Vendors: legal name, tax number, bank account
- Customers: legal name, tax number, address
5. Keep a change log and review it
Record who requested, who approved and what changed. Then review the log regularly: why requests were rejected and which errors repeat. Use the answers to improve the form, the rules and the training.
D-Master puts these habits into one flow: guided request forms, validation and duplicate checks, approval by data owners, posting to SAP through standard interfaces and a complete change log.