@Patrick Killeen Welcome to Microsoft Q&A forum!
Please ensure that you meet the following prerequisites before you attempt to generate a Sensor Placement map:
- The farm size must be more than one acre. -
- The number of cloud-free Sentinel scenes must be more than six for the selected date range. -
- At least six cloud-free Sentinel scenes must have a Normalized Difference Vegetation Index (NDVI) greater than or equal to 0.3.
Could you please confirm if you have already followed the troubleshooting guide?