Issue with ST_SquareGrid

[TodorCholakov]

I created my project using the following commands :

cds init hana-features-test --java
cd hana-features-test
mvn com.sap.cds:cds-maven-plugin:add -Dfeature=TINY_SAMPLE
mvn com.sap.cds:cds-maven-plugin:add -Dfeature=CF
cds add mta
cds add hana --for production

Then I changed the deploy command in srv/pom.xml to use the hana dialect :

<command>deploy --to hana --dry --out "${project.basedir}/src/main/resources/schema-hana.sql"</command>

I also added the workaround to allow tables without primary keys in the package,json, by adding this section:

  "cds": {
    "cdsc": {
      "severities": {
        "odata-spec-violation-no-key": "Warning"
      }
    }
  }

Then I added the declaration and the usage of the ST_SquareGrid function in my cat-service.cds like this :

    .persistence.exists
    entity ST_SquareGrid(size: Double, geometry: hana.ST_GEOMETRY) {
        geom: hana.ST_GEOMETRY;
        i: Integer;
        j: Integer;
    }

    entity V as select from ST_SquareGrid(size: 1.0, geometry: ST_GeomFromWkt('Point(1.5 -2.5)'))
    { geom, i, j };

I took the above example from the capire documentation at 

https://cap.cloud.sap/docs/guides/databases-hana#spatial-grid-generators

mbt  build, builds the application without errors.

However I get an error when deploying the application, saying :

Error: The file requires "db://CATALOGSERVICE_ST_SQUAREGRID" which is not provided by any file [8212001]

I am missing something, but I don't know what. Any help?

PS: Running the following SQL in Hana studio connected to the same DB works, so I assume that the function exists and is available :

SELECT GEOM.ST_AsText(), I, J FROM ST_RectangleGrid(1.0, 2.0, ST_GeomFromWkt('Point(1.5 -2.5)'));