Software to handel and Match datas fields via API - form Invoices and document

CMS, Database, C++ Programming are needed. I'm looking for a Software which getting invoice and dokument data from Json or csv via API input or upload via CSV. The reached Invoice and dokument datas should be automatically compared, filled and matched with existing datas in the system under several criterias. Also amount is just a nummer example 1983 which must be changed in 19,83. Needed Datas in system are uploade das CSV. Should be possible to change datas but only from definated group. There will be work several Persons with definated Access. All datas can (if possible) handelt in one database Supplier datas and what he does Customer Datas and for each account the booking datas. Missing data which are already in standard Datas should be automatically filled, checking doubles with all Data in systems. System generates a Master data which can be viewed over explorer. View is normal or click on detailed view Worker with access can change, add or overwrite datas. Input phase is then fineshed - are datas in first Master System gets a day approx 100 to 400 JSON files with each a invoice or document data. Now a workflow starts to several Workers. On definated criterias