# SAP IDoc basic type: ORDERS05 – Purchasing/Sales
## Segment: E1EDK01 – IDoc: Document header general data
### Field: ACTION – Action code for the whole EDI message
#### – Initial: This field is not used in the message
#### 000 – No particular action required
#### 001 – Reverse entire document
#### 002 – Changes in document header
#### 003 – Changes in one or more items
#### 004 – Changes in header and items
#### 005 – Credit memo display /ERS method
#### 006 – Retroactive price change/clearing invoice
#### 007 – Non-valuated goods receipt