Naming conventions for using Prefixes

Subject area object prefix

A subject area specific application object is prefixed with the name of the subject area the object belongs to.

Following prefixes should be used in different subject areas:

Subject area Prefix Examples
Inventory Invent* InventAccountType_PRJ
Products EcoResProduct* EcoResProductType_PRJ
Product categories EcoResCategory* EcoResCategoryClass_PRJ
Customers Cust* CustBankAccount
Vendors Vend*  
Ledger Ledger*  
Project Proj*  
Production Prod*  
Warehouse management WMS

Application area object prefix

An application area object is prefixed with the name of the application area the object belongs to.

Subject area Prefix Examples
System wide feature Sys
Workflow Workflow*  
Data Management Framework DMF*  

The DEL_ prefix

DEL_ is a special prefix. It is an abbreviation for Deleted and is used for application objects that will be deleted. After an object is prefixed with DEL_, it will be supported for a release and then deleted in the next version of the product.

DEL_ tables and fields are necessary to allow data update. Such objects allow access to old data that must be migrated to a new location.

When an object with a DEL_ prefix is introduced, the update mechanisms handle changes in the standard application, for example by moving fields and X++ code to the table that replaces the one with the DEL_ prefix. But, if you have written X++ code that references an application object that has been given a DEL_ prefix, you have to update these references yourself.