IRS Letters and Forms
CP566A

CP566A — Advises the applicant that additional information and/or supporting identification or exception documentation is necessa…

Advises the applicant that additional information and/or supporting identification or exception documentation is necessary to complete the processing of Form W-7

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CP566A

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What the IRS language says

Advises the applicant that additional information and/or supporting identification or exception documentation is necessary to complete the processing of Form W-7

What it usually means

CP566A is in our IR Manual catalog. Official wording is dense — we translate it for business owners and individuals and map realistic next steps.

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