The "system.queryexception: list has no rows for assignment to sobject" error occurs when you are trying to assign a query result to a variable, but the query returns no rows. This can happen for several reasons, such as:
- The query may be incorrect, causing it to return no results.
- The query may be correct, but there may be no data that matches the query criteria.
- The query may be correct, but the user doesn't have access to the data that matches the query criteria.
To fix the error, you need to ensure that the query is correct and that it returns at least one row of data. You can do this by:
- Checking the syntax of the query to make sure it is valid.
- Verifying that the query criteria are correct and that they match the data in the system.
- Checking that the user has the appropriate access to the data that matches the query criteria.
If the query is correct and the user has the appropriate access, but the query is still not returning any rows, it is likely that there is no data in the system that matches the query criteria. In this case, you may need to add more data or modify the query criteria to match existing data.
If you are not able to fix the error by yourself and you are using Salesforce, please consider to open a case with Salesforce Support, they will be able to help you troubleshoot the issue and provide more detailed guidance on how to resolve it.
Frequently Asked Questions About The Error
What causes the "system.queryexception: list has no rows for assignment to sobject" error?
This error occurs when a query returns no results and the query result is being assigned to a variable. This can happen for several reasons, such as an incorrect query, no data matching the query criteria, or lack of access to the data matching the query criteria.
How can I fix the "system.queryexception: list has no rows for assignment to sobject" error?
To fix the error, you should check the syntax of the query to make sure it is valid, verify that the query criteria are correct and match the data in the system, and check that the user has the appropriate access to the data that matches the query criteria. If the query is correct and the user has the appropriate access, but the query is still not returning any rows, you may need to add more data or modify the query criteria to match existing data.
How can I prevent the "system.queryexception: list has no rows for assignment to sobject" error from occurring?
To prevent the error from occurring, you should make sure that your queries are correct and that they return at least one row of data. You should also make sure that the user has the appropriate access to the data that matches the query criteria. Additionally, you should test your queries and code thoroughly before deploying it to a production environment.
Can the "system.queryexception: list has no rows for assignment to sobject" error be handled?
Yes, the error can be handled by using a try-catch block to catch the exception and then taking appropriate action based on the exception. For example, you can display an error message to the user or redirect them to a different page if the query returns no results.
Can I open a case with Salesforce Support if I am using Salesforce and I am not able to fix the error?
Yes, if you are using Salesforce and are not able to fix the error, you can open a case with Salesforce Support for help troubleshooting the issue and for more detailed guidance on how to resolve it.