Odata V4 Batch processing does not work as teiid/olingo rejects "Accept: multipart/mixed" request header -------------------------------------------------------------------------------------------------------- Key: TEIID-5545 URL: https://issues.jboss.org/browse/TEIID-5545 Project: Teiid Issue Type: Bug Components: OData Affects Versions: 11.2 Reporter: Christoph John Assignee: Steven Hawkins Priority: Critical Fix For: 12.0 When using Teiid together with SAPUI5/OpenUI5 Odata V4 model, batch processing does not work as Teiid rejects the "Accept: multipart/mixed" header. The issue has been described in https://developer.jboss.org/message/986421#986421 It has been stated that Olingo in general does support multipart messages and it was recommended to remove the header from the request. https://developer.jboss.org/message/986425#986425 Unfortunately this seems to be not easily possible when using the SAPUI5 framework. I addressed the issue in the SAPUI5 forum under the following issue: https://github.com/SAP/openui5/issues/2288 The result of this discussion was, that the header is valid for the send content. As I am no expert in the topic I do not really have an opinion on that. However, https://www.w3.org/Protocols/rfc1341/7_2_Multipart.html suggests that the header is required. So I am not sure if it is correct or an error to reject the message. However, if Olingo can process the content, it would be great to have a fix for the accept header, or alternatively a config option to enable handling of the Accept header in a way that Olingo processes these data.