on 2025 May 13 12:19 PM
Hi,
I have a very simple CAP project in BAS with HANA Cloud DB and Fiori Elements with OData v4 (without any service implementation or extensions). I deployed this project on client's BTP subaccount CF space without any errors, but when I click on Create button in Fiori Elements UI, I receive 500 error and the OData service log shows below error:
argument type mismatch: not supported path expression: must be json list for array index access\n-> $[\"DraftUUID\"]\n-> ^\n
In my understanding, CAP service is not able to create a Draft row in HANA DB when UI sends a POST call with empty object as payload (standard fiori elements stuff).
However, when I downloaded the codebase from client's BAS, imported in my trial account and deployed, it works as it should. The draft gets created successfully in trial account and I see the Object page in create mode. I compared the tables and views created in the HDI container and those are exactly the same.
On client's stack, I have undeployed and deployed this app several times and nothing works.
Can you please help in fixing this issue?
Here is the package.json file:
{
"name": "papm-poc2",
"version": "1.0.0",
"description": "A simple CAP project.",
"repository": "<Add your repository here>",
"license": "UNLICENSED",
"private": true,
"dependencies": {
"@sap/cds": "^8.7.2",
"express": "^4",
"@sap/xssec": "^4.4.0",
"@cap-js/hana": "^1.6.1"
},
"devDependencies": {
"@cap-js/cds-types": "^0.9.0",
"@cap-js/sqlite": "^1",
"@sap/cds-dk": "^8.7.2",
"rimraf": "^5.0.5",
"mbt": "^1.2.29"
},
"scripts": {
"start": "cds-serve",
"watch-papmpoc2costpool": "cds watch --open papmpoc2costpool/webapp/index.html?sap-ui-xx-viewCache=false",
"undeploy": "cf undeploy papm-poc2 --delete-services --delete-service-keys --delete-service-brokers",
"build": "rimraf resources mta_archives && mbt build --mtar archive",
"deploy": "cf deploy mta_archives/archive.mtar --retries 1"
},
"cds": {
"requires": {
"connectivity": true,
"destinations": true,
"html5-runtime": true,
"[production]": {
"db": "hana",
"auth": "xsuaa"
}
},
"sql": {
"native_hana_associations": false
}
},
"sapux": [
"app/papmpoc2costpool"
]
}
Here is the mta.yaml file:
_schema-version: 3.3.0
ID: papm-poc2
description: A simple CAP project.
version: 1.0.0
modules:
- name: papm-poc2-srv
type: nodejs
path: gen/srv
requires:
- name: papm-poc2-db
- name: papm-poc2-connectivity
- name: papm-poc2-destination
- name: papm-poc2-auth
provides:
- name: srv-api
properties:
srv-url: ${default-url}
parameters:
buildpack: nodejs_buildpack
instances: 1
build-parameters:
builder: npm-ci
- name: papm-poc2-db-deployer
type: hdb
path: gen/db
requires:
- name: papm-poc2-db
parameters:
buildpack: nodejs_buildpack
- name: papm-poc2-destinations-deployer
type: com.sap.application.content
requires:
- name: srv-api
- name: papm-poc2-srv
- name: papm-poc2-destination
parameters:
content-target: true
- name: papm-poc2-html5-repo-host
parameters:
service-key:
name: papm-poc2-repo-host-key
- name: papm-poc2-auth
parameters:
service-key:
name: papm-poc2-auth-key
parameters:
content:
instance:
destinations:
# - Authentication: OAuth2UserTokenExchange
# HTML5.Timeout: 180000
# Name: papm-poc2-srv
# TokenServiceInstanceName: papm-poc2-auth
# TokenServiceKeyName: papm-poc2-auth-key
# URL: ~{srv-api/srv-url}
- Name: papm-poc2-repo-host
ServiceInstanceName: papm-poc2-html5-service
ServiceKeyName: papm-poc2-repo-host-key
sap.cloud.service: com.client.ra.poc2
- Authentication: OAuth2UserTokenExchange
Name: papm-poc2-auth
ServiceInstanceName: papm-poc2-auth
ServiceKeyName: papm-poc2-auth-key
sap.cloud.service: com.client.ra.poc2
existing_destinations_policy: update
build-parameters:
no-source: true
- name: papm-poc2-app-deployer
type: com.sap.application.content
path: .
requires:
- name: papm-poc2-html5-repo-host
parameters:
content-target: true
build-parameters:
build-result: resources
requires:
- artifacts:
- comclientrapapmpoc2costpool.zip
name: comclientrapapmpoc2costpool
target-path: resources/
- name: comclientrapapmpoc2costpool
type: html5
path: app/papmpoc2costpool
build-parameters:
build-result: dist
builder: custom
commands:
- npm install
- npm run build:cf
supported-platforms: []
resources:
- name: papm-poc2-auth
type: org.cloudfoundry.managed-service
parameters:
config:
tenant-mode: dedicated
xsappname: papm-poc2-${org}-${space}
path: ./xs-security.json
service: xsuaa
service-plan: application
- name: papm-poc2-db
type: com.sap.xs.hdi-container
parameters:
service: hana
service-plan: hdi-shared
- name: papm-poc2-connectivity
type: org.cloudfoundry.managed-service
parameters:
service: connectivity
service-plan: lite
- name: papm-poc2-destination
type: org.cloudfoundry.managed-service
parameters:
config:
HTML5Runtime_enabled: true
init_data:
instance:
destinations:
- Authentication: NoAuthentication
HTML5.DynamicDestination: true
HTML5.ForwardAuthToken: true
Name: papm-poc2-srv-api
ProxyType: Internet
Type: HTTP
URL: ~{srv-api/srv-url}
- Authentication: NoAuthentication
Name: ui5
ProxyType: Internet
Type: HTTP
URL: https://ui5.sap.com
existing_destinations_policy: update
service: destination
service-plan: lite
requires:
- name: srv-api
- name: papm-poc2-html5-repo-host
type: org.cloudfoundry.managed-service
parameters:
service: html5-apps-repo
service-name: papm-poc2-html5-service
service-plan: app-host
parameters:
deploy_mode: html5-repo
enable-parallel-deployments: true
build-parameters:
before-all:
- builder: custom
commands:
- npm ci
- npx cds build --production
Br, Ekansh
SAP HANA Cloud SAP Cloud Application Programming Model SAP Fiori Elements
Request clarification before answering.
If the application works in one environment but not the other, there is probably nothing wrong with the app, but with the environment in which it runs.
You can check the HANA Cloud instance to see if it is up-to-date. Newer versions of the @cap-js/hana package might require a newer version of the HANA Cloud database as well.
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