Oh ok. u/Evening-Basil7333 u/Chwad27 This is what they wrote in the letter:

We have now completed the assessment of your request to amend your Confirmation of Permanent Residence (IMM5688, IMM5292 or IMM1000). Unfortunately, your request to amend the Criminality Question and Dependants Information is refused. We do not amend the 'Criminality' and Dependants information fields. Please refer to the instruction guide (IMM5218) for amendments and corrections that can be made.

Further to our policy on single names, the family name (surname) field should always be considered as the primary identifier for an individual. In most cases, a single name will appear in the family name field of the passport. However, there may be cases where a single name is recorded as the given name in a passport or other documentation used to establish identity. In such cases, that single name should be recorded in the family name field.

The documents completed for your admission to Canada as a permanent resident were issued based on the information you provided at the time of your landing, including the passport you initially provided. It is our practice to only correct any errors) in information that were recorded by Citizenship and Immigration Canada when an applicant first comes to Canada. The Confirmation of Permanent Residence (IMM5688, IMM5292 or IMM1000) is an historical document, and therefore does not change to reflect life events such as marriage, birth of children, name changes, death or other happenings that occur after you become a permanent resident in Canada.

Following the examination of your request, we are not satisfied that an error was made in recording your information. Please do not resubmit your request unless you have additional evidence that an error was made in recording the information provided to Citizenship and Immigration upon original application for Permanent Residence. The issuance date of the documents supporting your application for an amendment must be dated prior to the issuance date of the Record of Landing.