We have a dedicated Azure capacity (A1) and using REST API to ExportTo PDF, approx 20 pdfs with 3/4 pages in each report. We are receiving a 429 'too many pending requests' response, after about 15 reports. This seems to clear exactly an hour after 1st request. Please can someone confirm which limit we are hitting? The documentation online isn’t clear.
For your PDF printing requirement, do take a look at BI Helper https://bihelper.tech/, an independent tool to automate the generation of PDF / PPTX reports from Power BI (Pro and Premium), with Excel export of matrix and table visuals.
With BI Helper, you can select report pages to print, generate multi-page PDF / PPTX reports with slicers and filters applied, and email them to your users. BI Helper has an option to include matrix and table visuals as Excel files, and lots of other advanced features.
BI Helper is simple to configure and use with your reports and dashboards. It is secure and scalable (hosted on AWS) and offers you a 14 day free trial. Do test it and let me know if it works for you.