| Brick-and-Ivy |  | Use hyphens to create multiple-word tag | 
		
			| Brick&Ivy |  | Tag cannot contain special characters | 
		
			| Brick and Ivy |  | Tag cannot contain spaces | 
		
			| Brick-and-Ivey |  | Tag cannot be used to identify commonly misspelled words of terms used in article | 
		
			| BrickAndIvy |  | Multiple-word tag should not be created using camel case or Pascal case | 
		
			| P97900, 2019YE |  | Append numeric characters with alpha characters to create numeric tags | 
		
			| 97900, 2019 |  | Tag cannot contain only numeric characters |