タイプと属性の管理で、1 つのタイプの属性を作成するとエラーが発生します: Windchill PDMLink で「次のデータ型のデータベース列が使用できないため、「文字列」属性を作成できません: java.lang.String : count」

A "String" attribute cannot be created because database columns of the following datatypes are not available: java.lang.String : count

Caused by: wt.util.WTException: A "String" attribute cannot be created because database columns of the following datatypes are not available: java.lang.String : count : 1. Contact your system administrator to execute the AddColumns utility to allocate the necessary database columns.
Nested exception is: com.ptc.core.meta.common.CorrectableException: A "String" attribute cannot be created because database columns of the following datatypes are not available: java.lang.String : count : 1. Contact your system administrator to execute the AddColumns utility to allocate the necessary database columns.
	at com.ptc.core.lwc.client.forms.GenericLWCFormProcessor.doOperation(GenericLWCFormProcessor.java:82)
	at com.ptc.core.components.forms.DefaultFormProcessorController.executeDoOperation(DefaultFormProcessorController.java:538)
	at com.ptc.core.components.forms.DefaultFormProcessorController.performExecuteDoOperationAndPostProcess(DefaultFormProcessorController.java:342)
	at com.ptc.core.components.forms.DefaultFormProcessorController.execute(DefaultFormProcessorController.java:263)
	at com.ptc.core.components.forms.FormDispatcher.callControllerExecute(FormDispatcher.java:146)
	at com.ptc.core.components.forms.FormDispatcher.callFormProcessorController(FormDispatcher.java:116)
	at com.ptc.core.components.forms.FormDispatcher.execute(FormDispatcher.java:93)
	... 62 more
Caused by: com.ptc.core.meta.common.CorrectableException: A "String" attribute cannot be created because database columns of the following datatypes are not available: java.lang.String : count : 1. Contact your system administrator to execute the AddColumns utility to allocate the necessary database columns.
	at com.ptc.core.lwc.server.LWCColumnAllocationUtility.allocate(LWCColumnAllocationUtility.java:185)
	at com.ptc.core.lwc.server.cache.AttValidatorHelper.validateAttForPersist(AttValidatorHelper.java:567)
	at com.ptc.core.lwc.server.cache.AttHelper.persistAttDefs(AttHelper.java:364)
	at com.ptc.core.lwc.server.cache.TypeDefinitionManager.persistTypeDef(TypeDefinitionManager.java:1038)
	at com.ptc.core.lwc.server.cache.TypeDefinitionManager.updateTypeDef(TypeDefinitionManager.java:2202)
	at com.ptc.core.lwc.server.cache.TypeDefinitionManager.updateTypeDef(TypeDefinitionManager.java:2065)
	at com.ptc.core.lwc.server.StandardTypeDefinitionService.updateTypeDef(StandardTypeDefinitionService.java:216)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at wt.services.ServiceFactory$ServerInvocationHandler.invoke(ServiceFactory.java:399)
	at com.sun.proxy.$Proxy27.updateTypeDef(Unknown Source)
	at com.ptc.core.lwc.client.forms.CreateAttributeFormProcessor.createAttributeDefinition(CreateAttributeFormProcessor.java:328)
	at com.ptc.core.lwc.client.forms.CreateAttributeFormProcessor.processForm(CreateAttributeFormProcessor.java:108)
	at com.ptc.core.lwc.client.forms.GenericLWCFormProcessor.doOperation(GenericLWCFormProcessor.java:75)
	... 68 more