3237352 - Error while parsing an XML stream in Fiori custom application

Error while parsing an XML stream is logged in transaction /IWFND/ERROR_LOG and a message error pops up in the application

In the HTTP trace, the request to the OData service, https://<hostname>:<portNumber>/sap/opu/odata/................. , fails with the following error

Request Method: POST
Status Code: 400 Bad Request

and comparing a successful and unsuccessful request shows differences. In particular:

Successful call

_metadata: {,…}
id: "https://<hostname>:<portNumber>/sap/opu/odata/.................."
type: "value"
uri: "https://<hostname>:<portNumber>/sap/opu/odata/.................. "

Failing call

__metadata: {,…}
deepPath: "value1"
id: "https://<hostname>:<portNumber>/sap/opu/odata/.................. "
type: "value"
uri: "https://<hostname>:<portNumber>/sap/opu/odata/.................. "

SAPUI5 1.71.36

deepPath , KBA , CA-UI5-COR , Core and Runtime , Problem