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Question

Rest API coonections and endpoints

  • May 22, 2026
  • 4 replies
  • 19 views

Hello Guys,

 

Im new in Rest Api connections, i need to connect from Postman to Acumatica Endpoints, but i dont know how to configure the connection, boyd, etc from the side of Postman.

In acumatica the endpoint is USPS.25.200.001  and i need to get some tables like:

ww_ZZ_Analytica_AliasTable_AH 

 

Etc

 

My question is whats is teh config from the side of Postman

4 replies

jinin
Pro I
Forum|alt.badge.img+12
  • Pro I
  • May 22, 2026

Hi ​@ggonzalez 

To connect Postman with Acumatica REST API, you mainly need,

  1. Acumatica URL
  2. Endpoint name/version
  3. Login credentials
  4. Correct request headers
  5. JSON body (for POST/PUT)
  1. Login to Acumatica from Postman

URL:
https://youracumaticasite.com/entity/auth/login

Method:
POST

Request Body:

{
"name": "username",
"password": "password",
"company": "CompanyName"
}
  1. Get Data from Custom Endpoint

GET https://youracumaticasite.com/entity/USPS/25.200.001/ww_ZZ_Analytica_AliasTable_AH
  1. Headers for GET Call

Accept : application/json
  1. Example POST (Insert)

POST https://youracumaticasite.com/entity/USPS/25.200.001/ww_ZZ_Analytica_AliasTable_AH

Request Body:

{
"Field1": {
"value": "Test"
},
"Field2": {
"value": "123"
}
}

Acumatica REST URL format:

https://domain/entity/{EndpointName}/{Version}/{EntityName}

  • Author
  • Freshman I
  • May 22, 2026

Thanks Jinin,

 

I receive error with the first step of post 500 Internal Error

 

 

Please your help , for fix

 

Thanks


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  • Pro III
  • May 23, 2026

@ggonzalez 

The 500 Internal Server Error means the API request is reaching Acumatica, but something is failing on the server side.

Please verify:

  • Use the correct login URL format:
    https://<AcumaticaSite>/entity/auth/login
  • Request method is POST
  • Username, password, and company name are correct

Forum|alt.badge.img+4
  • Jr Varsity II
  • May 23, 2026

Hi ​@ggonzalez ,

Below are API endpoint related help & support provided by acumatica , you can refer & use as per requirement

Configuring the REST API