Preview processing and automatic correction of bulk data for software as a service applications

A processor-implemented method for automatic correction and migration of a plurality of bulk data, the method comprising:

• identifying one or more sources, wherein the one or more sources include the plurality of bulk data;
• identify a subset of the bulk data, wherein the subset is identified by combining a number of randomly selected records from each one of the identified one or more sources, and wherein the number of randomly selected records from each one of the identified one or more sources is proportional to a size of each of the identified one or more sources;
• uploading the subset to an enterprise application;
• determining an error list from the enterprise application based on the uploaded subset;
• in response to an error being on the error list, removing the subset from the enterprise application;
• matching one or more rules to one or more errors in the error list based on the determined error list and a plurality rule data;
• converting the subset using the matched one or more rules;
• and
• repeating uploading, determining, removing, matching, and converting steps based on determining the error being on the error list.