diff --git a/Adobe-error-codes.md b/Adobe-error-codes.md
index b7e4ea7..9d8f31a 100644
--- a/Adobe-error-codes.md
+++ b/Adobe-error-codes.md
@@ -401,6 +401,26 @@ This error is almost identical to the [E_LIC_NO_DISTRIBUTION_RIGHTS](#E_LIC_NO_D
 
 This error occurs while downloading an ACSM file, and it means that one of the GET parameters passed to the server has an invalid syntax, for example, additional whitespace or other invalid characters included with the data. The detailed error message usually contains information on which of the parameters / fields is invalid. If you're an end user, try redownloading the ACSM file. If that doesn't help, the distributor will need to fix this. 
 
+### E_ZIP_BAD_EOA_LENGTH
+
+Currently there's no information about this error.
+
+### E_ZIP_BAD_EOA_SIGNATURE
+
+Currently there's no information about this error.
+
+### E_ZIP_BAD_OFFSET
+
+Currently there's no information about this error.
+
+### E_ZIP_NOT_ZIP_ARCHIVE
+
+This happens if the ZIP library is trying to decompress a file that's not a ZIP. This should usually never happen as ADE checks if a file is a ZIP before invoking the library.
+
+### E_ZIP_TOO_FEW_ENTRIES
+
+If the decompressed length in a ZIP header is too small / wrong.
+
 ### GBLINK_AUTH_SIGNATURE_NOMATCH
 
 This error means that the signature for the ACSM file download request was invalid. This usually means the link got corrupted somehow. Try re-downloading the ACSM from a fresh link.