Charter Hall Prime Office Fund's (CPOF) credit metrics will remain subpar for a 'BBB' rating, at least over the next 24 months, in our view. The Australia-based wholesale office fund faces rising interest costs, elevated debt levels and declining asset valuations at a time of structural and cyclical weakness in demand for office space. A higher-for-longer interest rate outlook and anemic transaction market will challenge the timeliness of capital raising and efficacy of planned asset divestments. As a result, we expect CPOF's ratio of funds from operations (FFO) to debt will remain below 7% over the next two years. We therefore lowered to 'BBB-' from 'BBB' our long-term issuer credit rating on CPOF and the long-term issue ratings on the