CID Font: Download Sources, License Guide, and Best Practices
to convert the text to outlines. This bypasses the need for the font entirely, though you will no longer be able to edit the text directly. Check Font Properties Adobe Acrobat File > Properties > Fonts
CID (Character Identifier) fonts are a type of font used in PostScript and PDF files. They are also known as CID-keyed fonts. CID fonts are designed to support a large number of characters, especially for languages that require a large character set, such as Chinese, Japanese, and Korean (CJK).
Your RIP (Raster Image Processor) will replace the missing CID font with a standard font. A Japanese legal document suddenly prints in Courier New, shifting margins by inches. Result? Wasted paper and ruined batches.