$batch failed - Error: Expected 'OData-Version' header with value '4.0' but received value 'null' in response for http://localhost:5000/odata/$batch

[siasty]

Hi, I have a problem with batch request

but in respod in batch is OK... and return data and also odata version


what is wrong?

[ThomasChadzelek]

Hello @siasty !

Thanks for using OData V4! We apologize for any inconvenience caused!

I'm terribly sorry, but I cannot spot any mistake here. Everything looks fine, no idea why this fails. Please try to debug.

Best regards,
Thomas

[siasty]

Hi @ThomasChadzelek thanks for the quick reply, can you help me because I don't know what to look for

what scope should have odata-version ?

I have no odata-version only in request body but this function should not get from the response headers ?

[siasty]

is it possible to set this parameters "bVersionOptional" ? after changing to true, odata was parsed

[UweReeder]

Hi @siasty,

It looks as if that is a CORS request. But CORS regulates the visibility of the response headers in JavaScript via the header "Access-Control-Expose-Headers". For OData V4 to work with CORS, "OData-Version" must be given here.

You should also allow X-CSRF-Token, ETag and SAP-Messages.

Best Regards
Uwe

BTW. The scope of fnGetHeader in the screenshot has the response headers in "a" and the request headers in "b". So only the Content-Type response header is visible to OData V4, as it is a CORS-safelisted response header.

[siasty]

you're right I added Access-Control-Expose-Headers to the controler odata And it works. thx.

[boghyon]

Duplicate of #3150, #2686, ...