vfmodule-topology-operation-assign calls gw-vfmodule-update, which for all the VF modules but the vGW returns the following error:

2019-08-23T20:48:13,976 | INFO  | qtp1746381404-123 | SvcLogicServiceImplBase          | 433 - wrap_file__opt_opendaylight_system_org_onap_ccsdk_sli_core_sli-provider-base_0.5.1_sli-provider-base-0.5.1.jar - 0.0.0 | SvcLogicGraph [module=GENERIC-RESOURCE-API, rpc=gw-vfmodule-update, mode=sync, version=1.6.2, md5sum=3209c4fac56bb2dfd738a6108b135918] - 358 (call) | About to execute graph SvcLogicGraph [module=GENERIC-RESOURCE-API, rpc=gw-vfmodule-update, mode=sync, version=1.6.2, md5sum=3209c4fac56bb2dfd738a6108b135918]

2019-08-23T20:48:13,977 | INFO  | qtp1746381404-123 | SvcLogicServiceImplBase          | 433 - wrap_file__opt_opendaylight_system_org_onap_ccsdk_sli_core_sli-provider-base_0.5.1_sli-provider-base-0.5.1.jar - 0.0.0 | SvcLogicGraph [module=GENERIC-RESOURCE-API, rpc=gw-vfmodule-update, mode=sync, version=1.6.2, md5sum=3209c4fac56bb2dfd738a6108b135918] - 358 (call) | About to execute node # 1 (block)

2019-08-23T20:48:13,978 | INFO  | qtp1746381404-123 | SvcLogicServiceImplBase          | 433 - wrap_file__opt_opendaylight_system_org_onap_ccsdk_sli_core_sli-provider-base_0.5.1_sli-provider-base-0.5.1.jar - 0.0.0 | SvcLogicGraph [module=GENERIC-RESOURCE-API, rpc=gw-vfmodule-update, mode=sync, version=1.6.2, md5sum=3209c4fac56bb2dfd738a6108b135918] - 1 (block) | About to execute node # 2 (set)

2019-08-23T20:48:13,999 | INFO  | qtp1746381404-123 | SvcLogicServiceImplBase          | 433 - wrap_file__opt_opendaylight_system_org_onap_ccsdk_sli_core_sli-provider-base_0.5.1_sli-provider-base-0.5.1.jar - 0.0.0 | SvcLogicGraph [module=GENERIC-RESOURCE-API, rpc=gw-vfmodule-update, mode=sync, version=1.6.2, md5sum=3209c4fac56bb2dfd738a6108b135918] - 2 (set) | About to execute node # 3 (set)

2019-08-23T20:48:14,000 | INFO  | qtp1746381404-123 | SvcLogicServiceImplBase          | 433 - wrap_file__opt_opendaylight_system_org_onap_ccsdk_sli_core_sli-provider-base_0.5.1_sli-provider-base-0.5.1.jar - 0.0.0 | SvcLogicGraph [module=GENERIC-RESOURCE-API, rpc=gw-vfmodule-update, mode=sync, version=1.6.2, md5sum=3209c4fac56bb2dfd738a6108b135918] - 3 (set) | About to execute node # 4 (get-resource)

2019-08-23T20:48:14,005 | INFO  | qtp1746381404-123 | ConfigResource                   | 212 - org.onap.ccsdk.sli.adaptors.mdsal-resource-provider - 0.5.1 | SvcLogicGraph [module=GENERIC-RESOURCE-API, rpc=gw-vfmodule-update, mode=sync, version=1.6.2, md5sum=3209c4fac56bb2dfd738a6108b135918] - 4 (get-resource) | Querying resource: GENERIC-RESOURCE-API. At URL: restconf/config/GENERIC-RESOURCE-API:tunnelxconn-allotted-resources/

2019-08-23T20:48:14,012 | INFO  | qtp1746381404-123 | ConfigResource                   | 212 - org.onap.ccsdk.sli.adaptors.mdsal-resource-provider - 0.5.1 | SvcLogicGraph [module=GENERIC-RESOURCE-API, rpc=gw-vfmodule-update, mode=sync, version=1.6.2, md5sum=3209c4fac56bb2dfd738a6108b135918] - 4 (get-resource) | Sending REST GET to http://localhost:8181/restconf/config/GENERIC-RESOURCE-API:tunnelxconn-allotted-resources/

2019-08-23T20:48:14,350 | INFO  | qtp1746381404-123 | ConfigResource                   | 212 - org.onap.ccsdk.sli.adaptors.mdsal-resource-provider - 0.5.1 | SvcLogicGraph [module=GENERIC-RESOURCE-API, rpc=gw-vfmodule-update, mode=sync, version=1.6.2, md5sum=3209c4fac56bb2dfd738a6108b135918] - 4 (get-resource) | Response: 404 Not Found

2019-08-23T20:48:14,357 | INFO  | qtp1746381404-123 | ConfigResource                   | 212 - org.onap.ccsdk.sli.adaptors.mdsal-resource-provider - 0.5.1 | SvcLogicGraph [module=GENERIC-RESOURCE-API, rpc=gw-vfmodule-update, mode=sync, version=1.6.2, md5sum=3209c4fac56bb2dfd738a6108b135918] - 4 (get-resource) | Response body :

<errors xmlns="urn:ietf:params:xml:ns:yang:ietf-restconf"><error><error-type>application</error-type><error-tag>data-missing</error-tag><error-message>Request could not be completed because the relevant data model content does not exist </error-message></error></errors>

2019-08-23T20:48:14,439 | INFO  | qtp1746381404-123 | SvcLogicServiceImplBase          | 433 - wrap_file__opt_opendaylight_system_org_onap_ccsdk_sli_core_sli-provider-base_0.5.1_sli-provider-base-0.5.1.jar - 0.0.0 | SvcLogicGraph [module=GENERIC-RESOURCE-API, rpc=gw-vfmodule-update, mode=sync, version=1.6.2, md5sum=3209c4fac56bb2dfd738a6108b135918] - 4 (get-resource) | About to execute node # 5 (for)

2019-08-23T20:48:14,450 | ERROR | qtp1746381404-123 | GenericResourceApiProvider       | 238 - org.onap.sdnc.northbound.generic-resource-api-provider - 1.6.1 | SvcLogicGraph [module=GENERIC-RESOURCE-API, rpc=gw-vfmodule-update, mode=sync, version=1.6.2, md5sum=3209c4fac56bb2dfd738a6108b135918] - 5 (for) | Caught exception executing service logic for vf-module-topology-operation

org.onap.ccsdk.sli.core.sli.SvcLogicException: Invalid index values [0,]

at org.onap.ccsdk.sli.core.sli.provider.base.ForNodeExecutor.execute(ForNodeExecutor.java:68) [433:wrap_file__opt_opendaylight_system_org_onap_ccsdk_sli_core_sli-provider-base_0.5.1_sli-provider-base-0.5.1.jar:0.0.0]

at org.onap.ccsdk.sli.core.sli.provider.base.SvcLogicServiceImplBase.executeNode(SvcLogicServiceImplBase.java:147) [433:wrap_file__opt_opendaylight_system_org_onap_ccsdk_sli_core_sli-provider-base_0.5.1_sli-provider-base-0.5.1.jar:0.0.0]

at org.onap.ccsdk.sli.core.sli.provider.base.BlockNodeExecutor.execute(BlockNodeExecutor.java:62) [433:wrap_file__opt_opendaylight_system_org_onap_ccsdk_sli_core_sli-provider-base_0.5.1_sli-provider-base-0.5.1.jar:0.0.0]

This blocks VF module instantiation with GRA.

The manual fix is to delete the node called "call check for VNF-API-preload and copy" from the vfmodule-topology-operation-assign.