Setting Registration Options: Extensions Tab

Source files must have recognized DOS file extensions before they can be registered. Files without extensions are checked for content, and if the content is recognized, the files are registered with appropriate extensions appended.

Files with unknown extensions are flagged, provided that you uncheck Ignore Unknown and Overloaded Extensions on the Extensions tab of the Workspace Registration options window. If a file fails to register because its extension is unknown, simply add the extension to the list of recognized extensions on the Extensions tab and register the file again.

Choose Options > Workspace Options. The Workspace Options window opens. Click the Registration tab, then the Extensions tab.
In the Source Type pane, select the source file type whose extensions you want to view. The extensions for the file type are listed in the Extensions pane. Select each extension you want the system to recognize. Add extensions as necessary.
Note: If a source file does not specify an extension when it references an included file, the verification process assumes that the included file has one of the recognized extensions. If multiple included files have the same name but different extensions, the system registers the file with the first extension in the list.
Check Ignore Unknown and Overloaded Extensions if you do not want the registration process to issue warnings about unrecognized and overloaded extensions. An overloaded extension is one assigned to more than one file type.
For COBOL programs and copybooks, check Remove Sequence Numbers if you want the system to replace preceding enumeration characters, or sequence numbers, with blanks. Sequence numbers are removed only from the source file versions maintained by the product.