Multiple Bodies in a POST operation - postman

Question

I have the following question, I want to make a request for a POST, I have 13 different Body's in environment variables, how can I put all 13 at the same time in Postman to execute? Is there any way?
This is my code:
Some Bodies:
{ "et": "conta", "na": "List", "T": "list", "OPT": [ "TL-1", "TL-2" ], "DBY": "names user", "iM": false }
{ "et": "conta", "na": "Integer", "T": "integer", "DBY": "namesUser", "iM": false }
{ "et": "conta", "na": "MultiSelectList", "T": "multiSelect", "opt": [ "L1", "L2", "L3" ], "DBY": "names user", "iM": true }
What I am doing but I get error 400:
[
{{List}},
{{Integer}}
]
So I would like to know if there is any way to be able to execute the 13 Body's placing them all at the same time

Answer 1

Json arrays (https://restfulapi.net/json-array/) should be used for this
[
{
"et": "conta",
"na": "List",
"T": "list",
"OPT": [
"TL-1",
"TL-2"
],
"DBY": "names user",
"iM": false
},
{
(second array)
},
.
.
.
{
(thirteenth array)
}
]
Good to know: you can use this tool to verify your json; https://jsonlint.com/
Whether or not this results in a status 400 error depends on the implementation of the web api's post method (and you mentioned this happens). In .NET, the received json should be converted to a List<T> instead of type T.
If you posting to your own api, try changing it according to: https://forums.asp.net/t/2098779.aspx?How+to+change+WEB+API+to+accept+a+JSON+Array+for+multiple+entries+
If it's an external api, sending an array won't work. You have to send the data sequentially, but there are some tips and tricks preventing you from doing this manually in Postman: How to Send multiple request concurrently/Sequentially in postman with different set of values for each request?