To add a file to the Threat Prevention Whitelist, you need two items:

B. Object Name and MD5 signature

You need the Object Name to identify the file or object you want to whitelist, and the MD5 signature to specify the unique hash value of that file. The MD5 signature ensures that the specific file you want to whitelist is identified accurately.

References: Check Point Certified Security Expert R81 Study Guide, Threat Prevention Administration Guide.