I've updated the security role to have the "Append" and "Append To" privilege on the Lead and Account records.
The log Details from "Show Details"
null
Activity Id: fe070d5f-df17-443b-9d79-d7841aa3a636
--NOT VERY HELPFUL
From Network tab of Dev Tool
{error: {code: "0x80048306",…}}
error: {code: "0x80048306",…}
@Microsoft.PowerApps.CDS.ErrorDetails.ApiActivityIdKey: "41f66740-c5ea-4308-9f18-e4bfe960cbdb"
@Microsoft.PowerApps.CDS.ErrorDetails.ApiDepthKey: "1"
@Microsoft.PowerApps.CDS.ErrorDetails.ApiExceptionCategory: "ClientError"
@Microsoft.PowerApps.CDS.ErrorDetails.ApiExceptionHttpStatusCode: "403"
@Microsoft.PowerApps.CDS.ErrorDetails.ApiExceptionMesageName: "unManagedIdsAccessDenied"
@Microsoft.PowerApps.CDS.ErrorDetails.ApiExceptionSourceKey: "Plugin/Microsoft.Crm.ObjectModel.CustomBusinessEntityService"
@Microsoft.PowerApps.CDS.ErrorDetails.ApiPluginSolutionNameKey: "System"
@Microsoft.PowerApps.CDS.ErrorDetails.ApiStepKey: "94cdbb1b-ea3e-db11-86a7-000a3a5473e8"
@Microsoft.PowerApps.CDS.ErrorDetails.ApiStepSolutionNameKey: "System"
@Microsoft.PowerApps.CDS.HelpLink: "">go.microsoft.com/.../
@Microsoft.PowerApps.CDS.InnerError.Message: "{"CallerPrincipal":{"PrincipalId":"b006c8f4-b400-ea11-a811-000d3a55df98","Type":8,"IsUserPrincipal":true},"OwnerPrincipal":{"PrincipalId":"924aca5f-f5fc-e111-8b9f-78e3b511b63d","Type":9,"IsUserPrincipal":false},"ObjectId":"cd027af0-a320-e311-8f9c-b4b52f67d672","ObjectTypeCode":1,"EntityName":"account","ObjectBusinessUnitId":"42c2c952-7de7-de11-a259-0050569c7de4","RightsToCheck":"AppendToAccess","RoleAccessRights":"None","PoaAccessRights":"None","HsmAccessRights":"None","GrantedAccessRights":"None","Messages":["PrincipalHasOwnerPrincipalWithAtLeastBasicPrivilegeDepth = False","EntityUserGroupRights = None","MinimumPrivilegeDepthRequired = Local","SecLib::AccessCheckEx2 failed. Owner Data: teamType=0, privilegeCount=350; Principal Data: roleCount=13, privilegeCount=67, accessMode=0"],"EntityOwnershipTypeMask":1,"CallerInfo":{"IsSystemUser":false,"IsSupportUser":false,"IsAdministrator":false,"IsCustomizer":false,"IsDisabled":false,"IsIntegrationUser":false,"Teams":null,"Roles":null},"ReadOnlyState":"UserAndOrgFullAccess","IsHsmEnabled":false,"HsmInfo":null}"
code: "0x80048306"
message: "{"CallerPrincipal":{"PrincipalId":"b006c8f4-b400-ea11-a811-000d3a55df98","Type":8,"IsUserPrincipal":true},"OwnerPrincipal":{"PrincipalId":"924aca5f-f5fc-e111-8b9f-78e3b511b63d","Type":9,"IsUserPrincipal":false},"ObjectId":"cd027af0-a320-e311-8f9c-b4b52f67d672","ObjectTypeCode":1,"EntityName":"account","ObjectBusinessUnitId":"42c2c952-7de7-de11-a259-0050569c7de4","RightsToCheck":"AppendToAccess","RoleAccessRights":"None","PoaAccessRights":"None","HsmAccessRights":"None","GrantedAccessRights":"None","Messages":["PrincipalHasOwnerPrincipalWithAtLeastBasicPrivilegeDepth = False","EntityUserGroupRights = None","MinimumPrivilegeDepthRequired = Local","SecLib::AccessCheckEx2 failed. Owner Data: teamType=0, privilegeCount=350; Principal Data: roleCount=13, privilegeCount=67, accessMode=0"],"EntityOwnershipTypeMask":1,"CallerInfo":{"IsSystemUser":false,"IsSupportUser":false,"IsAdministrator":false,"IsCustomizer":false,"IsDisabled":false,"IsIntegrationUser":false,"Teams":null,"Roles":null},"ReadOnlyState":"UserAndOrgFullAccess","IsHsmEnabled":false,"HsmInfo":null}"
Is there anything there that points to the missing Security Privilege?