Why doesn't third party authentication work inside an HTTP QUERY node in a p

Why doesn't third party authentication work inside an HTTP QUERY node in a process model:

ERROR INFO:

Title: Failed to retrieve value from SCS username=, Message: com.appiancorp.suiteapi.common.exceptions.AppianRuntimeException: com.appiancorp.suiteapi.common.exceptions.AppianException: An error occurred while accessing the per-user credentials from the Secure Credentials Store. The encryption key for [ ] was not populated during login. See the documentation for proper configuration when using a custom authentication provider. (APNX-1-4221-001), Details: An error occurred while accessing the per-user credentials from the Secure Credentials Store. The encryption key for [ ] was not populated during login. See the documentation for proper configuration when using a custom authentication provider.

while it works within a rule:

a!httpQuery(
"API",
"GET",
{a!httpHeader(
"Connection",
"keep-alive"),
a!httpH...

OriginalPostID-194017

OriginalPostID-194017