# Change Trust These are result codes that communicate success (200) or failure (400) specific to the `Change Trust` operation. Learn more about the [`Change Trust` operation](/start/list-of-operations.md#change-trust) * OpSuccess `CHANGE_TRUST_SUCCESS` Trust was successfully changed * OpMalformed `CHANGE_TRUST_MALFORMED` The input to this operation is invalid. * OpNoIssuer `CHANGE_TRUST_NO_ISSUER` The issuer of the asset cannot be found. * op\_invalid\_limit `CHANGE_TRUST_INVALID_LIMIT` The limit is not sufficient to hold the current balance of the trustline and still satisfy its buying liabilities. * OpLowReserve `CHANGE_TRUST_LOW_RESERVE` This account does not have enough XBN to satisfy the minimum XBN reserve increase caused by adding a subentry and still satisfy its XBN selling liabilities. For every new trustline added to an account, the minimum reserve of XBN that account must hold increases. * op\_self\_not\_allowed `CHANGE_TRUST_SELF_NOT_ALLOWED` The source account attempted to create a trustline for itself, which is not allowed. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://developers.docs.bantufoundation.org/api/errors/result-codes/operation-specific/change-trust.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.