Invoke-RestMethod Returns Error Indicating Response Size Exceeds 6MB Limit

We have a data mart that has been ingesting large responses from an API server call using invoke-restmethod for 4 years without issue. Yesterday, we started seeing errors with error code 400 and message “Response exceeds maximum size (6 MB)”.

I tried using invoke-webrequest instead and get the same error. Postman calls using the same endpoint complete successfully.

I cannot seem to find any documentation on this limitation let alone anything that would help me determine how to increase this limitation.

Any help would be greatly appreciated.

OP posted that this is fixed on Spiceworks: