kustomize: Error merging common config with multiple microservice's configMap

I have configMap for each microservice like this:

configMapGenerator:
  - name: env-vars
    literals:
      - MICRO_SERVER_NAME=accountsrv

I want to merge bellow common config with each microservice’s configMap

configMapGenerator:
  - name: env-vars
    behavior: merge
    literals:
      - MICRO_SERVER_ADDRESS=0.0.0.0:8080
      - MICRO_BROKER_ADDRESS=0.0.0.0:10001
      - APP_ENV=development
      - CONFIG_DIR=/config
      - CONFIG_FILE=config.yaml
      - MICRO_LOG_LEVEL=debug
      - MICRO_CLIENT_RETRIES=3
      - MICRO_CLIENT_REQUEST_TIMEOUT=5s

I am getting Error: accumulating resources: recursed accumulation of... found multiple objects

# @kustomize build deploy/overlays/e2e/ | sed -e "s|\$(NS)|default|g" -e "s|\$(IMAGE_VERSION)|v0.2.5|g" | kubectl apply -f -
Error: accumulating resources: recursed accumulation of path '../../bases/micros': merging from generator &{0xc0004aa2a0 0xc00034e580 { } {map[] map[] false} {{ env-vars merge {[MICRO_SERVER_ADDRESS=0.0.0.0:8080 MICRO_BROKER_ADDRESS=0.0.0.0:10001 APP_ENV=development CONFIG_DIR=/config CONFIG_FILE=config.yaml MICRO_LOG_LEVEL=debug MICRO_CLIENT_RETRIES=3 MICRO_CLIENT_REQUEST_TIMEOUT=5s] [] [] }}}}: found multiple objects [{"apiVersion":"v1","data":{"CORS_ALLOWED_HEADERS":"Authorization,Content-Type","CORS_ALLOWED_METHODS":"POST,GET","CORS_ALLOWED_ORIGINS":"*","MICRO_API_ENABLE_RPC":"true","MICRO_API_HANDLER":"rpc","MICRO_API_NAMESPACE":"","MICRO_LOG_LEVEL":"debug","MICRO_SERVER_NAME":"gatewaysrv"},"kind":"ConfigMap","metadata":{"annotations":{"org":"acmeCorporation"},"labels":{"app.kubernetes.io/component":"microservice","app.kubernetes.io/instance":"gateway-abcxzy","app.kubernetes.io/managed-by":"kustomize","app.kubernetes.io/name":"gateway","app.kubernetes.io/part-of":"micro-starter-kit"},"name":"gatewayenv-vars"}}{nsfx:true,beh:unspecified} {"apiVersion":"v1","data":{"MICRO_PROXY_PROTOCOL":"grpc","MICRO_SERVER_NAME":"proxysrv"},"kind":"ConfigMap","metadata":{"annotations":{"org":"acmeCorporation"},"labels":{"app.kubernetes.io/component":"microservice","app.kubernetes.io/instance":"proxy-abcxzy","app.kubernetes.io/managed-by":"kustomize","app.kubernetes.io/name":"proxy","app.kubernetes.io/part-of":"micro-starter-kit"},"name":"proxyenv-vars"}}{nsfx:true,beh:unspecified} {"apiVersion":"v1","data":{"DATABASE_HOST":"$(DATABASE_ENDPOINT)","MICRO_SERVER_NAME":"accountsrv"},"kind":"ConfigMap","metadata":{"labels":{"app.kubernetes.io/component":"microservice","app.kubernetes.io/instance":"account-srv-abcxzy","app.kubernetes.io/name":"account-srv"},"name":"accountenv-vars"}}{nsfx:true,beh:unspecified} {"apiVersion":"v1","data":{"MICRO_SERVER_NAME":"emailersrv"},"kind":"ConfigMap","metadata":{"labels":{"app.kubernetes.io/component":"microservice","app.kubernetes.io/instance":"emailer-srv-abcxzy","app.kubernetes.io/name":"emailer-srv"},"name":"emailerenv-vars"}}{nsfx:true,beh:unspecified} {"apiVersion":"v1","data":{"MICRO_SERVER_NAME":"greetersrv"},"kind":"ConfigMap","metadata":{"labels":{"app.kubernetes.io/component":"microservice","app.kubernetes.io/instance":"greeter-srv-abcxzy","app.kubernetes.io/name":"greeter-srv"},"name":"greeterenv-vars"}}{nsfx:true,beh:unspecified}] that could accept merge of ~G_v1_ConfigMap|~X|env-vars

Source https://github.com/xmlking/micro-starter-kit/tree/develop/deploy/bases/micros

Are there any alternative way to accomplish this?

Structure

micros
├── account-srv
│   ├── config
│   │   └── config.yaml
│   ├── deployment.yaml
│   ├── kustomization.yaml
│   └── service.yaml
├── emailer-srv
│   ├── config
│   │   └── config.yaml
│   ├── deployment.yaml
│   ├── kustomization.yaml
│   └── service.yaml
├── gateway
│   ├── deployment.yaml
│   ├── kustomization.yaml
│   └── service.yaml
├── greeter-srv
│   ├── config
│   │   └── config.yaml
│   ├── deployment.yaml
│   ├── kustomization.yaml
│   └── service.yaml
├── kconfig.yaml
├── kustomization.yaml
└── proxy
    ├── deployment.yaml
    ├── kustomization.yaml
    └── service.yaml