【Salesforce】 does not support fields on a Salesforce object.
Visualforceで<apex:input>
【Salesforce】INVALID_ID_FIELD, The master record id [id] appears in the merge id list
ApexでDatabase.mergeを利用したマージ処理を
【Salesforce】MISSING_ARGUMENT, A single merge request must contain at least 1 records to merge
ApexでDatabase.mergeを利用したマージ処理を