50xxx · The file itself
CESOP error 50070
“Message size exceeded”
Partly caught before you file
What it means
The message is larger than CESOP accepts: at most 1 GB uncompressed. Larger submissions must be split across several files, each valid on its own.
Why files get it
- A quarter's payment data for a large acquirer written as a single message.
How to fix it
- Split the payees across several messages, each with its own MessageRefId and each complete in itself.
Check a file for 50070 before you submit
The free validator runs the CESOP business rules against your file and names the error each finding would become — 50070 included — so the Validation Result is not where you first hear about it.
The file is parsed in your browser tab. No upload, no account.
Source: the error catalogue in the Payment Data XSD User Guide — CESOP, v4.40 (DG TAXUD), §2.2.3.18. The explanation is ours; it describes the file format and is not tax advice.