A practical example: opening a corporate account at a Panamanian bank
Suppose a Florida-formed LLC wants to open a corporate account at a bank in Panama to handle payments from Latin American clients. The Panamanian bank will likely ask for, among other things, a current Certificate of Status, a certified copy of the Articles of Organization, an IRS EIN letter, an internal resolution authorizing the account opening and naming the signers, passport copies for those signers, and a beneficial-owner declaration. The Certificate of Status and, in some cases, the certified copy of the Articles typically require an apostille. The EIN letter and internal resolutions follow different rules and shouldn't automatically be apostilled: the bank needs to say whether it will accept the original, a certified copy, a notarized statement, or another form of authentication. Confirming with the bank, document by document, which ones need an apostille and which don't avoids over- or under-apostilling the file.
What to do if the bank rejects the document you submitted
If the bank objects to the certificate, say, because it's too old, issued by a different state than the bank expected, or missing the apostille, it's generally worth requesting the exact reason for the rejection in writing before reordering anything. In many cases the problem is a matter of form, not substance: a correct certificate ordered under the wrong company name, or an apostille processed through the wrong state. Requesting the same type of document again without correcting the original cause of the rejection just produces the same result.