Leila Jones, Rebecca Grant, and Iain Hrynaszkiewicz have published "Implementing Publisher Policies That Inform, Support and Encourage Authors to Share Data: Two Case Studies" in Insights.
Here's an excerpt:
Open research data is one of the key areas in the expanding open scholarship movement. Scholarly journals and publishers find themselves at the heart of the shift towards openness, with recent years seeing an increase in the number of scholarly journals with data-sharing policies aiming to increase transparency and reproducibility of research. In this article we present two case studies which examine the experiences that two leading academic publishers, Taylor & Francis and Springer Nature, have had in rolling out data-sharing policies. We illustrate some of the considerations involved in providing consistent policies across journals of many disciplines, reflecting on successes and challenges.