Different components in Acquia DAM have specific character restrictions. The following guidelines separate restrictions by component type:

Filenames

Best practices for filenames:

1. Use dashes (-) or underscores (_) to separate words.

2. Keep filenames to 27 characters or less (excluding extension) for optimal display.

3. Limit filename length to a maximum of 128 characters.

4. Ensure file extensions are present to process and match assets during imports and exports.

Avoid these in filenames:

• Spaces at the start or end

• Spaces before the file extension

• Periods at the start or end

• Files that end with .appl

• The following characters: < > : " / \ | ? * , + % # ( ) [ ] { }

• DOS-reserved filenames: AUX, CLOCK$, COM1-COM9, CON, LPT1-LPT9, NUL, PRN

Collections and categories

Avoid these characters in collection and category names:

Different components in Acquia DAM have specific character restrictions. The following guidelines separate restrictions by component type:

Filenames

Best practices for filenames:

1. Use dashes (-) or underscores (_) to separate words.

2. Keep filenames to 27 characters or less (excluding extension) for optimal display.

3. Limit filename length to a maximum of 128 characters.

4. Ensure file extensions are present to process and match assets during imports and exports.

Avoid these in filenames:

• Spaces at the start or end

• Spaces before the file extension

• Periods at the start or end

• Files that end with .appl

• The following characters: < > : " / \ | ? * , + % # ( ) [ ] { }

• DOS-reserved filenames: AUX, CLOCK$, COM1-COM9, CON, LPT1-LPT9, NUL, PRN

Collections and categories

Avoid these characters in collection and category names:

• < > : " / \ | ? * , + % # ( ) [ ] { }

• Spaces at the start or end

Metadata

Character restrictions for metadata fields:

• Avoid the following characters, which can cause issues with search or imports: < > : " / \ | ? * , + % # ( ) [ ] { }

• System trims spaces at the start and end.

• System can strip some special characters during process cycles.

General restrictions

The following items lack support across any component:

• Certain Latin, Asian, and Arabic characters

• Advanced mathematical symbols

• Unicode characters that can cause system conflicts