CAP - Structured OData is only supported with OData version v4

[mani_ac]

We are in need of using v2 version of Odata from CAP due to limitation in UI . I used @sap/cds-odata-v2-adapter-proxy to retrieve the v2 version.

I am able to fetch the data without any issue using /v2/entity but /v2/$metadata is not working. I get the below error.

Error: CDS compilation failed
Error: Structured OData is only supported with OData version v4
    at handleMessages (/home/user/cap_xsodata/node_modules/@sap/cds-compiler/lib/base/messages.js:182:13)
    at validate (/home/user/cap_xsodata/node_modules/@sap/cds-compiler/lib/api/validate.js:156:3)
    at translateOptions (/home/user/cap_xsodata/node_modules/@sap/cds-compiler/lib/api/options.js:92:3)
    at Object.edmx (/home/user/cap_xsodata/node_modules/@sap/cds-compiler/lib/api/options.js:189:25)
    at edmx (/home/user/cap_xsodata/node_modules/@sap/cds-compiler/lib/api/main.js:526:45)
    at Object.api [as edmx] (/home/user/cap_xsodata/node_modules/@sap/cds-compiler/lib/api/main.js:713:14)
    at Object.edmx (/home/user/cap_xsodata/node_modules/@sap/cds/lib/compile/cdsc.js:112:48)
    at Object.cds_compile_to_edmx [as edmx] (/home/user/cap_xsodata/node_modules/@sap/cds/lib/compile/to/edm.js:21:23)
    at prepareMetadata (/home/user/cap_xsodata/node_modules/@sap/cds-odata-v2-adapter-proxy/lib/index.js:688:39)
    at getDefaultMetadata (/home/user/cap_xsodata/node_modules/@sap/cds-odata-v2-adapter-proxy/lib/index.js:652:18)

OData definition is simple.

using DATA_MODEL_STOREINFO as _DATA_MODEL_STOREINFO from '../db/sales-data-model';
service  SALES_SERVICES {
    entity StoreInfo as projection on _DATA_MODEL_STOREINFO ;
}

Data model

@cds.persistence.exists
entity DATA_MODEL_STOREINFO {
    key ID       : String(20);
        LOCATION : String(100);
    key GROUP    : String(100);
};

Can you please suggest how to fix this issue?

[chgeo]

Also reported as per SAP case 219515/2022

[haykma]

Hi Manikandan,

that describes the same problem i'm facing with actually. Even if there is no answer here, did you found a solution?

kind regards
Matthias

[Caisi]

Hi guys,

I had the same issue and it turned out it was the following content of .cdsrc.json file that was causing the issue.

{
  "odata": {
    "flavor": "x4"
  }
}

[Heureso1]

Thankyo that helped a lot!