3764240 - OAuth 2.0 Client Test with Error HTTP_COMMUNICATION_FAILURE, HTTPIO_ERROR_OA2C_NO_SECRET in DRC Nota Fiscal

When testing the OAuth 2.0 client configuration for DRC Nota Fiscal using program OA2C_GENERIC_ACCESS with the Access Token Request option, the test fails with the following error:

lcl_oa2c_app->EXECUTE_ATR
granttype Client Credentials configured.

HTTP failure, processing failed, invalid state, invalid timeout or others
oa2c_error
Client configuration error or network problems. See kernel traces.
HTTPC Method:                  SEND
HTTPC Subrc:                   1
HTTPC Subrc Text:              http_communication_failure
HTTPC get_last_error code:     44
HTTPC get_last_error message:  HTTPIO_ERROR_OA2C_NO_SECRET

• SAP S/4HANA
• SAP ERP

OA2C_GENERIC_ACCESS, HTTP_COMMUNICATION_FAILURE, HTTPIO_ERROR_OA2C_NO_SECRET, OA2C_CONFIG, DRC, Nota Fiscal, OAuth 2.0, system refresh, client secret, SEFAZ , KBA , LOD-LH-NFE , SAP Document and Reporting Compliance, Outbound Nota Fiscal , Problem