[Home](./index.md) > [ibm-cloud-sdk-core](./ibm-cloud-sdk-core.md) > [checkCredentials](./ibm-cloud-sdk-core.checkcredentials.md) ## checkCredentials() function Checks credentials for common user mistakes of copying {, }, or " characters from the documentation **Signature:** ```typescript export declare function checkCredentials(obj: any, credsToCheck: string[]): Error | null; ``` ## Parameters

Parameter	Type	Description
obj	any	the options object holding credentials
credsToCheck	string\[\]	an array containing the keys of the credentials to check for problems

**Returns:** Error \| null a string with the error message if there were problems, null if not