Hi Alfred,
The information about labels are stored in a system entity but we are not recommending to build anything on top of it as the schema is subject to changes.
Though, I would recommend to install the starter kit https://github.com/microsoft/PowerApps-Samples/tree/master/ai-builder/starter-kit/invoice-processing
Follow, the installation procedure described here https://query.prod.cms.rt.microsoft.com/cms/api/am/binary/RE4vlqW
We are actually doing something similar, look at the "IPA Invoice Processor" flow.
We have introduced a Power Apps to configure the starter kit and where we store the mapping between the resulting invoice and the labels for each model and we store this in a custom entity "IPA Provider".
This information is retrieved in the flow with "Get Provider Information" including the model to call.
Then we call "Call a bound action" with this model dynamically.
Finally, we use complex formulas to dynamically retrieve the extracted data from the json output.
Here is a sample:
if(empty(outputs('Get_Provider_Information')?['body/aib_billtoname']),null,json(outputs('Call_Predict')?['body/response'])['predictionOutput']?['labels']?[outputs('Get_Provider_Information')?['body/aib_billtoname']]?['value'])
You can take this as an inspiration to achieve what you want.
About Solution checker, you should post your problem on the general Flow channel.
