Hello,
You can try below code to prefill some of the field while opening Quick create form -
var entityFormOptions = {};
entityFormOptions["entityName"] = "contact";
entityFormOptions["useQuickCreateForm"] = true;
// Set default values for the Contact form
var formParameters = {};
formParameters["firstname"] = "Sample";
formParameters["lastname"] = "Contact";
formParameters["fullname"] = "Sample Contact";
formParameters["emailaddress1"] = "contact@adventure-works.com";
formParameters["jobtitle"] = "Sr. Marketing Manager";
formParameters["donotemail"] = "1";
formParameters["description"] = "Default values for this record were set programmatically.";
// Set lookup column
formParameters["preferredsystemuserid"] = "3493e403-fc0c-eb11-a813-002248e258e0"; // ID of the user.
formParameters["preferredsystemuseridname"] = " Admin user"; // Name of the user.
formParameters["preferredsystemuseridtype"] = "systemuser"; // Table name.
// End of set lookup column
// Open the form.
Xrm.Navigation.openForm(entityFormOptions, formParameters).then(
function (success) {
console.log(success);
},
function (error) {
console.log(error);
});
docs.microsoft.com/.../openform