In Apex Code or an external integration? You can check the results of a Describe call to determine field accessibility. You can also do this in Apex Code, but you have to be aware of the 100 calls per transaction limit, so you can't check every field, just fields that may be relevant.
In Apex Code or an external integration? You can check the results of a Describe call to determine field accessibility. You can also do this in Apex Code, but you have to be aware of the 100 calls per transaction limit, so you can't check every field, just fields that may be relevant.