Can i create a DEAP JIRA by API - It says ERROR

Danh Dang_bf3rmy

POST

{
"fields":
{
"project":
{
"key": "{{project}}"
},
"summary": "DEAP - {{summary}}"
,
"issuetype":
{
"name": "DEAP"
},
"versions":[
{"name":"{{affectversion}}"}
],
"assignee": {
"name":"{{Assignee}}"
},
"reporter":{
"name":"{{Reporter}}"
},
"customfield_10110":{
"name":"{{Developer}}"
},
"priority":{
"name":"{{Priority}}"
},
"customfield_10125": "{{Class}}",
"customfield_10126": "{{Module}}",
"customfield_10127": "{{MainComponent}}"
}
}

Danh Dang_bf3rmy

{
    "errorMessages": ["We can't create this issue for you right now, it could be due to unsupported content you've entered into one or more of the issue fields. If this situation persists, contact your administrator as they'll be able to access more specific information in the log file."],
    "errors": {}
}