GDPR Checkpoints in ISO 27001 Audit Checklist

Controls from ISO 27001 Annex A that can help verification of GDPR compliance are:

• Controls from section A.8 (Asset Management), especially control A.8.2.1 (Classification of information)
• Controls from section A.14 (System acquisitions, development, and maintenance)
• Controls from section control A.15.1 (Information security in supplier relationships)
• A.16.1 (Management of information security incidents and improvements)
• A.18.1.1 (Identification of applicable legislation and contractual requirements)
• A.18.1.4 (Privacy and protection of personally identifiable information)  

This article will provide you a further explanation about ISO 27001 and GDPR:

• Does ISO 27001 implementation satisfy EU GDPR requirements? https://advisera.com/27001academy/blog/2016/10/17/does-iso-27001-implementation-satisfy-eu-gdpr-requirements/