Determining Links (EC-PCA)
Use
Profit Center Accounting documents have a unique source document as do most of the other accounting documents. These documents are linked with other documents via this source document. A profit center document is not itself usually the source document of the corresponding business transaction.
In all cases it is irrelevant whether or not the source document has been archived.
Features
You need to distinguish between two cases depending on the archiving object with which the data was archived.
The data was archived with archiving object EC_PCA_ITM:
So that the DRB is able to find the link from the archived profit center document to the source document you need an archive information structure for field catalog SAP_EC_PCA_005. This information structure should also contain field DOCNR.
To obtain the best runtime, you are recommended to create a secondary index with the fields MANDT and DOCNR as set out in SAP Note 164704. An information structure often works without field DOCNR, but you may find for some documents that it is not possible for the system to find the source document.
Archive information structure SAP_EC_PCA_005 contains field DOCNR and the appropriate secondary index.
So that the DRB is able to find the link from the source document to the archived profit center document you need an archive information structure for field catalog SAP_EC_PCA_005. You can also use archive information structure SAP_EC_PCA_005 here.
The data was archived with archiving object PCA_OBJECT:
So that the DRB is able to find the link from the archived profit center document to the source document you need an archive information structure for field catalog SAP_EC_PCA_002.
In theory you could use archive information structure SAP_EC_PCA_002. Nevertheless, you are recommended to create a separate archive information structure, as this is necessary on account of the link from the source document to the archived profit center document.
So that the DRB is able to find the link from the source document to the archived profit center document you need an archive information structure for field catalog SAP_EC_PCA_002. This information structure should also contain field REFDOCNR.
To obtain the best runtime, you are recommended to create a secondary index with the fields MANDT and REFDOCNR as set out in SAP Note 164704.