diff --git a/pint/v3/EBL_PINT_v3.0.0.yaml b/pint/v3/EBL_PINT_v3.0.0.yaml
index 5508d69a..f950448e 100644
--- a/pint/v3/EBL_PINT_v3.0.0.yaml
+++ b/pint/v3/EBL_PINT_v3.0.0.yaml
@@ -894,7 +894,7 @@ components:
           type: number
           minimum: 1
           description: |
-            The Size of the document in bytes.
+            The Size of the decoded document in bytes (the actual size of the pdf, word, image, etc document - **not** the Base64 encoded size).
           example: 4194304
         mediaType:
           type: string
diff --git a/pint/v3/README.md b/pint/v3/README.md
index 332e747b..a60e6f9b 100644
--- a/pint/v3/README.md
+++ b/pint/v3/README.md
@@ -43,6 +43,7 @@ Snapshot as of {TBD} for EBL Platform Interoperability 3.0.0 Beta. This Snapshot
   - `comments` description updated
   - `recipient` is **no** longer a required property on `Transaction` (it is not needed for `SIGN`, `BLANK_ENDORSE` and `SURRENDER` `actionCodes`)
 - `representedParty` property (equivalent to an `OnBehalfOfParty`) added to `actorParty` and `recipientParty`
+- improve `size` description in the `DocumentMetaData` object to make it clear it is the size of the decoded file (and not the size of the Base64 encoded file)
 
 ## Transport Document changes
 - `countryCode` description in `TaxLegalReference`, `NationalCommodityCode`, `CustomsReference`, `Address`, `PartyAddress`, `City` and `PlaceOfIssue` updated to allow the use of `ZZ` in case it is not known