Do API Usage Limits affect OData REST calls?

​@PSchirf61  I think No. OData calls do not consume your Acumatica API license limits.

Hi ​@PSchirf61,

​@Naveen Boga is right, here are a little more details on that.

OData calls are not counted against the Web Services API user or API request limits.

According to the Acumatica I300 OData documentation, an OData sign-in is treated as a conventional user rather than an API user. Therefore, it is governed by the Concurrent Users limit shown on the License tab of the License Monitoring Console (SM604000), instead of the Web Services API limits.

Yes, OData calls are included in the API Usage Limits. Since OData is one of Acumatica's web service interfaces, its requests are counted the same way as other API requests.

If your integration relies heavily on OData, it's worth considering the configured API limits, as high-volume requests can contribute to reaching those limits. If needed, you may want to optimize your queries (for example, by using $filter, $select, and paging) to reduce the number of requests and the amount of data returned.

​@PSchirf61 Yes and no.

OData logins count as regular concurrent users, not API users, so it won't eat your "Max Web Services API Users" slots, but it will take a normal user slot instead.

The request throttling (concurrent requests / requests per minute) still applies though, and OData queries are heavy. So if you're mixing REST + OData you can definitely hit the ceiling.